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Finding the Fourth Proportional to 79,711.80, 110,007.21 and 43,901.80

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Solution

The fourth proportional to 79,711.80, 110,007.21 and 43,901.80 is: 60,587.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,711.80 : 110,007.21 = 43,901.80 : x
  2. Step 2: Convert to fraction form
    79,711.80/110,007.21 = 43,901.80/x
  3. Step 3: Cross multiply
    79,711.80x = 110,007.21 × 43,901.80
  4. Step 4: Simplify right side
    79,711.80x = 4,829,514,421.59
  5. Step 5: Solve for x
    x = 4,829,514,421.59/79,711.80
  6. Step 6: Final answer
    x = 60,587.20

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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.