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Finding the Fourth Proportional to 99,279.54, 148,921.47 and 39,304.98

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Solution

The fourth proportional to 99,279.54, 148,921.47 and 39,304.98 is: 58,958.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,279.54 : 148,921.47 = 39,304.98 : x
  2. Step 2: Convert to fraction form
    99,279.54/148,921.47 = 39,304.98/x
  3. Step 3: Cross multiply
    99,279.54x = 148,921.47 × 39,304.98
  4. Step 4: Simplify right side
    99,279.54x = 5,853,355,399.92
  5. Step 5: Solve for x
    x = 5,853,355,399.92/99,279.54
  6. Step 6: Final answer
    x = 58,958.33

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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.