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Finding the Fourth Proportional to 60,436, 90,589.20 and 29,202.40

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Solution

The fourth proportional to 60,436, 90,589.20 and 29,202.40 is: 43,772.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,436 : 90,589.20 = 29,202.40 : x
  2. Step 2: Convert to fraction form
    60,436/90,589.20 = 29,202.40/x
  3. Step 3: Cross multiply
    60,436x = 90,589.20 × 29,202.40
  4. Step 4: Simplify right side
    60,436x = 2,645,422,054.08
  5. Step 5: Solve for x
    x = 2,645,422,054.08/60,436
  6. Step 6: Final answer
    x = 43,772.29

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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.