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Finding the Fourth Proportional to 99,402.53, 148,979.12 and 59,451.03

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Solution

The fourth proportional to 99,402.53, 148,979.12 and 59,451.03 is: 89,101.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,402.53 : 148,979.12 = 59,451.03 : x
  2. Step 2: Convert to fraction form
    99,402.53/148,979.12 = 59,451.03/x
  3. Step 3: Cross multiply
    99,402.53x = 148,979.12 × 59,451.03
  4. Step 4: Simplify right side
    99,402.53x = 8,856,961,835.24
  5. Step 5: Solve for x
    x = 8,856,961,835.24/99,402.53
  6. Step 6: Final answer
    x = 89,101.98

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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.