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Finding the Fourth Proportional to 6,240,630.40, 8,762,076.80 and 6,240,630.40

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Solution

The fourth proportional to 6,240,630.40, 8,762,076.80 and 6,240,630.40 is: 8,762,076.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,240,630.40 : 8,762,076.80 = 6,240,630.40 : x
  2. Step 2: Convert to fraction form
    6,240,630.40/8,762,076.80 = 6,240,630.40/x
  3. Step 3: Cross multiply
    6,240,630.40x = 8,762,076.80 × 6,240,630.40
  4. Step 4: Simplify right side
    6,240,630.40x = 54,680,882,845,214.73
  5. Step 5: Solve for x
    x = 54,680,882,845,214.73/6,240,630.40
  6. Step 6: Final answer
    x = 8,762,076.80

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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 (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.