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Finding the Fourth Proportional to 71,296.71, 98,379.16 and 39,465.53

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Solution

The fourth proportional to 71,296.71, 98,379.16 and 39,465.53 is: 54,456.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,296.71 : 98,379.16 = 39,465.53 : x
  2. Step 2: Convert to fraction form
    71,296.71/98,379.16 = 39,465.53/x
  3. Step 3: Cross multiply
    71,296.71x = 98,379.16 × 39,465.53
  4. Step 4: Simplify right side
    71,296.71x = 3,882,585,468.72
  5. Step 5: Solve for x
    x = 3,882,585,468.72/71,296.71
  6. Step 6: Final answer
    x = 54,456.73

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Why These Related Problems?

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