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Finding the Fourth Proportional to 151,939.60, 227,909.40 and 52,086.40

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Solution

The fourth proportional to 151,939.60, 227,909.40 and 52,086.40 is: 78,129.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,939.60 : 227,909.40 = 52,086.40 : x
  2. Step 2: Convert to fraction form
    151,939.60/227,909.40 = 52,086.40/x
  3. Step 3: Cross multiply
    151,939.60x = 227,909.40 × 52,086.40
  4. Step 4: Simplify right side
    151,939.60x = 11,870,980,172.16
  5. Step 5: Solve for x
    x = 11,870,980,172.16/151,939.60
  6. Step 6: Final answer
    x = 78,129.60

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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.