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Finding the Fourth Proportional to 99,484.74, 149,446.08 and 60,065.28

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Solution

The fourth proportional to 99,484.74, 149,446.08 and 60,065.28 is: 90,230.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,484.74 : 149,446.08 = 60,065.28 : x
  2. Step 2: Convert to fraction form
    99,484.74/149,446.08 = 60,065.28/x
  3. Step 3: Cross multiply
    99,484.74x = 149,446.08 × 60,065.28
  4. Step 4: Simplify right side
    99,484.74x = 8,976,520,640.10
  5. Step 5: Solve for x
    x = 8,976,520,640.10/99,484.74
  6. Step 6: Final answer
    x = 90,230.13

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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.