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Finding the Fourth Proportional to 71,779.53, 107,405.97 and 59,903.97

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Solution

The fourth proportional to 71,779.53, 107,405.97 and 59,903.97 is: 89,636.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,779.53 : 107,405.97 = 59,903.97 : x
  2. Step 2: Convert to fraction form
    71,779.53/107,405.97 = 59,903.97/x
  3. Step 3: Cross multiply
    71,779.53x = 107,405.97 × 59,903.97
  4. Step 4: Simplify right side
    71,779.53x = 6,434,044,004.70
  5. Step 5: Solve for x
    x = 6,434,044,004.70/71,779.53
  6. Step 6: Final answer
    x = 89,636.20

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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.