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Finding the Fourth Proportional to 58,663.72, 87,946.14 and 39,891.16

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Solution

The fourth proportional to 58,663.72, 87,946.14 and 39,891.16 is: 59,803.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,663.72 : 87,946.14 = 39,891.16 : x
  2. Step 2: Convert to fraction form
    58,663.72/87,946.14 = 39,891.16/x
  3. Step 3: Cross multiply
    58,663.72x = 87,946.14 × 39,891.16
  4. Step 4: Simplify right side
    58,663.72x = 3,508,273,542.12
  5. Step 5: Solve for x
    x = 3,508,273,542.12/58,663.72
  6. Step 6: Final answer
    x = 59,803.12

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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.