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Finding the Fourth Proportional to 71,788.54, 107,564.32 and 41,718.38

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Solution

The fourth proportional to 71,788.54, 107,564.32 and 41,718.38 is: 62,508.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,788.54 : 107,564.32 = 41,718.38 : x
  2. Step 2: Convert to fraction form
    71,788.54/107,564.32 = 41,718.38/x
  3. Step 3: Cross multiply
    71,788.54x = 107,564.32 × 41,718.38
  4. Step 4: Simplify right side
    71,788.54x = 4,487,409,176.20
  5. Step 5: Solve for x
    x = 4,487,409,176.20/71,788.54
  6. Step 6: Final answer
    x = 62,508.71

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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.