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Finding the Fourth Proportional to 645,149,212.40, 967,723,818.60 and 645,149,212.40

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Solution

The fourth proportional to 645,149,212.40, 967,723,818.60 and 645,149,212.40 is: 967,723,818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,149,212.40 : 967,723,818.60 = 645,149,212.40 : x
  2. Step 2: Convert to fraction form
    645,149,212.40/967,723,818.60 = 645,149,212.40/x
  3. Step 3: Cross multiply
    645,149,212.40x = 967,723,818.60 × 645,149,212.40
  4. Step 4: Simplify right side
    645,149,212.40x = 624,326,259,390,510,464
  5. Step 5: Solve for x
    x = 624,326,259,390,510,464/645,149,212.40
  6. Step 6: Final answer
    x = 967,723,818.60

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.