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Finding the Fourth Proportional to 99,248.64, 136,971.52 and 54,545.92

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Solution

The fourth proportional to 99,248.64, 136,971.52 and 54,545.92 is: 75,277.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,248.64 : 136,971.52 = 54,545.92 : x
  2. Step 2: Convert to fraction form
    99,248.64/136,971.52 = 54,545.92/x
  3. Step 3: Cross multiply
    99,248.64x = 136,971.52 × 54,545.92
  4. Step 4: Simplify right side
    99,248.64x = 7,471,237,572.20
  5. Step 5: Solve for x
    x = 7,471,237,572.20/99,248.64
  6. Step 6: Final answer
    x = 75,277.98

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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.