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Finding the Fourth Proportional to 103,616.80, 155,446.80 and 59,207.20

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Solution

The fourth proportional to 103,616.80, 155,446.80 and 59,207.20 is: 88,823.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,616.80 : 155,446.80 = 59,207.20 : x
  2. Step 2: Convert to fraction form
    103,616.80/155,446.80 = 59,207.20/x
  3. Step 3: Cross multiply
    103,616.80x = 155,446.80 × 59,207.20
  4. Step 4: Simplify right side
    103,616.80x = 9,203,569,776.96
  5. Step 5: Solve for x
    x = 9,203,569,776.96/103,616.80
  6. Step 6: Final answer
    x = 88,823.14

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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.