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Finding the Fourth Proportional to 55,591.38, 83,419.74 and 28,939.14

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Solution

The fourth proportional to 55,591.38, 83,419.74 and 28,939.14 is: 43,425.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,591.38 : 83,419.74 = 28,939.14 : x
  2. Step 2: Convert to fraction form
    55,591.38/83,419.74 = 28,939.14/x
  3. Step 3: Cross multiply
    55,591.38x = 83,419.74 × 28,939.14
  4. Step 4: Simplify right side
    55,591.38x = 2,414,095,534.62
  5. Step 5: Solve for x
    x = 2,414,095,534.62/55,591.38
  6. Step 6: Final answer
    x = 43,425.72

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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.