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Finding the Fourth Proportional to 645,149,207.90, 967,723,811.85 and 645,149,207.90

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Solution

The fourth proportional to 645,149,207.90, 967,723,811.85 and 645,149,207.90 is: 967,723,811.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,149,207.90 : 967,723,811.85 = 645,149,207.90 : x
  2. Step 2: Convert to fraction form
    645,149,207.90/967,723,811.85 = 645,149,207.90/x
  3. Step 3: Cross multiply
    645,149,207.90x = 967,723,811.85 × 645,149,207.90
  4. Step 4: Simplify right side
    645,149,207.90x = 624,326,250,680,996,096
  5. Step 5: Solve for x
    x = 624,326,250,680,996,096/645,149,207.90
  6. Step 6: Final answer
    x = 967,723,811.85

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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.