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Finding the Fourth Proportional to 62,047.68, 85,641.12 and 39,678.72

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Solution

The fourth proportional to 62,047.68, 85,641.12 and 39,678.72 is: 54,766.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,047.68 : 85,641.12 = 39,678.72 : x
  2. Step 2: Convert to fraction form
    62,047.68/85,641.12 = 39,678.72/x
  3. Step 3: Cross multiply
    62,047.68x = 85,641.12 × 39,678.72
  4. Step 4: Simplify right side
    62,047.68x = 3,398,130,020.97
  5. Step 5: Solve for x
    x = 3,398,130,020.97/62,047.68
  6. Step 6: Final answer
    x = 54,766.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.