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Finding the Fourth Proportional to 79,517.52, 109,731.92 and 43,707.52

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Solution

The fourth proportional to 79,517.52, 109,731.92 and 43,707.52 is: 60,315.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,517.52 : 109,731.92 = 43,707.52 : x
  2. Step 2: Convert to fraction form
    79,517.52/109,731.92 = 43,707.52/x
  3. Step 3: Cross multiply
    79,517.52x = 109,731.92 × 43,707.52
  4. Step 4: Simplify right side
    79,517.52x = 4,796,110,088.04
  5. Step 5: Solve for x
    x = 4,796,110,088.04/79,517.52
  6. Step 6: Final answer
    x = 60,315.14

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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.