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Finding the Fourth Proportional to 99,560.88, 148,990.39 and 62,138.48

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Solution

The fourth proportional to 99,560.88, 148,990.39 and 62,138.48 is: 92,988.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,560.88 : 148,990.39 = 62,138.48 : x
  2. Step 2: Convert to fraction form
    99,560.88/148,990.39 = 62,138.48/x
  3. Step 3: Cross multiply
    99,560.88x = 148,990.39 × 62,138.48
  4. Step 4: Simplify right side
    99,560.88x = 9,258,035,468.91
  5. Step 5: Solve for x
    x = 9,258,035,468.91/99,560.88
  6. Step 6: Final answer
    x = 92,988.69

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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.