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Finding the Fourth Proportional to 99,037.80, 148,575.90 and 49,789.80

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Solution

The fourth proportional to 99,037.80, 148,575.90 and 49,789.80 is: 74,694.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,037.80 : 148,575.90 = 49,789.80 : x
  2. Step 2: Convert to fraction form
    99,037.80/148,575.90 = 49,789.80/x
  3. Step 3: Cross multiply
    99,037.80x = 148,575.90 × 49,789.80
  4. Step 4: Simplify right side
    99,037.80x = 7,397,564,345.82
  5. Step 5: Solve for x
    x = 7,397,564,345.82/99,037.80
  6. Step 6: Final answer
    x = 74,694.35

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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.