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Finding the Fourth Proportional to 71,644.40, 107,211.45 and 62,386.10

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Solution

The fourth proportional to 71,644.40, 107,211.45 and 62,386.10 is: 93,356.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,644.40 : 107,211.45 = 62,386.10 : x
  2. Step 2: Convert to fraction form
    71,644.40/107,211.45 = 62,386.10/x
  3. Step 3: Cross multiply
    71,644.40x = 107,211.45 × 62,386.10
  4. Step 4: Simplify right side
    71,644.40x = 6,688,504,240.85
  5. Step 5: Solve for x
    x = 6,688,504,240.85/71,644.40
  6. Step 6: Final answer
    x = 93,356.97

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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.