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Finding the Fourth Proportional to 424,565.10, 636,776.17 and 120,937.93

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Solution

The fourth proportional to 424,565.10, 636,776.17 and 120,937.93 is: 181,386.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,565.10 : 636,776.17 = 120,937.93 : x
  2. Step 2: Convert to fraction form
    424,565.10/636,776.17 = 120,937.93/x
  3. Step 3: Cross multiply
    424,565.10x = 636,776.17 × 120,937.93
  4. Step 4: Simplify right side
    424,565.10x = 77,010,389,978.84
  5. Step 5: Solve for x
    x = 77,010,389,978.84/424,565.10
  6. Step 6: Final answer
    x = 181,386.53

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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.