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Finding the Fourth Proportional to 59,902.60, 89,853.90 and 42,406.60

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Solution

The fourth proportional to 59,902.60, 89,853.90 and 42,406.60 is: 63,609.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,902.60 : 89,853.90 = 42,406.60 : x
  2. Step 2: Convert to fraction form
    59,902.60/89,853.90 = 42,406.60/x
  3. Step 3: Cross multiply
    59,902.60x = 89,853.90 × 42,406.60
  4. Step 4: Simplify right side
    59,902.60x = 3,810,398,395.74
  5. Step 5: Solve for x
    x = 3,810,398,395.74/59,902.60
  6. Step 6: Final answer
    x = 63,609.90

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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.