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Finding the Fourth Proportional to 132,489.01, 182,835.69 and 72,060.09

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Solution

The fourth proportional to 132,489.01, 182,835.69 and 72,060.09 is: 99,443.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,489.01 : 182,835.69 = 72,060.09 : x
  2. Step 2: Convert to fraction form
    132,489.01/182,835.69 = 72,060.09/x
  3. Step 3: Cross multiply
    132,489.01x = 182,835.69 × 72,060.09
  4. Step 4: Simplify right side
    132,489.01x = 13,175,156,276.61
  5. Step 5: Solve for x
    x = 13,175,156,276.61/132,489.01
  6. Step 6: Final answer
    x = 99,443.39

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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.