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Finding the Fourth Proportional to 79,711.62, 109,985.88 and 60,586.29

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Solution

The fourth proportional to 79,711.62, 109,985.88 and 60,586.29 is: 83,596.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,711.62 : 109,985.88 = 60,586.29 : x
  2. Step 2: Convert to fraction form
    79,711.62/109,985.88 = 60,586.29/x
  3. Step 3: Cross multiply
    79,711.62x = 109,985.88 × 60,586.29
  4. Step 4: Simplify right side
    79,711.62x = 6,663,636,421.59
  5. Step 5: Solve for x
    x = 6,663,636,421.59/79,711.62
  6. Step 6: Final answer
    x = 83,596.80

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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.