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Finding the Fourth Proportional to 99,062.40, 148,687.68 and 61,508.64

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Solution

The fourth proportional to 99,062.40, 148,687.68 and 61,508.64 is: 92,321.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,062.40 : 148,687.68 = 61,508.64 : x
  2. Step 2: Convert to fraction form
    99,062.40/148,687.68 = 61,508.64/x
  3. Step 3: Cross multiply
    99,062.40x = 148,687.68 × 61,508.64
  4. Step 4: Simplify right side
    99,062.40x = 9,145,576,981.56
  5. Step 5: Solve for x
    x = 9,145,576,981.56/99,062.40
  6. Step 6: Final answer
    x = 92,321.38

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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.