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Finding the Fourth Proportional to 99,231.20, 148,844.40 and 59,758.40

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Solution

The fourth proportional to 99,231.20, 148,844.40 and 59,758.40 is: 89,636.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,231.20 : 148,844.40 = 59,758.40 : x
  2. Step 2: Convert to fraction form
    99,231.20/148,844.40 = 59,758.40/x
  3. Step 3: Cross multiply
    99,231.20x = 148,844.40 × 59,758.40
  4. Step 4: Simplify right side
    99,231.20x = 8,894,703,192.96
  5. Step 5: Solve for x
    x = 8,894,703,192.96/99,231.20
  6. Step 6: Final answer
    x = 89,636.15

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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.