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Finding the Fourth Proportional to 621,761.80, 932,642.70 and 266,715.40

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Solution

The fourth proportional to 621,761.80, 932,642.70 and 266,715.40 is: 400,073.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,761.80 : 932,642.70 = 266,715.40 : x
  2. Step 2: Convert to fraction form
    621,761.80/932,642.70 = 266,715.40/x
  3. Step 3: Cross multiply
    621,761.80x = 932,642.70 × 266,715.40
  4. Step 4: Simplify right side
    621,761.80x = 248,750,170,787.58
  5. Step 5: Solve for x
    x = 248,750,170,787.58/621,761.80
  6. Step 6: Final answer
    x = 400,073.10

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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.