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Finding the Fourth Proportional to 129,071.56, 193,629.90 and 58,957.96

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Solution

The fourth proportional to 129,071.56, 193,629.90 and 58,957.96 is: 88,447.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,071.56 : 193,629.90 = 58,957.96 : x
  2. Step 2: Convert to fraction form
    129,071.56/193,629.90 = 58,957.96/x
  3. Step 3: Cross multiply
    129,071.56x = 193,629.90 × 58,957.96
  4. Step 4: Simplify right side
    129,071.56x = 11,416,023,899.00
  5. Step 5: Solve for x
    x = 11,416,023,899.00/129,071.56
  6. Step 6: Final answer
    x = 88,447.25

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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.