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Finding the Fourth Proportional to 115,470.40, 173,221.80 and 36,576.40

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Solution

The fourth proportional to 115,470.40, 173,221.80 and 36,576.40 is: 54,869.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,470.40 : 173,221.80 = 36,576.40 : x
  2. Step 2: Convert to fraction form
    115,470.40/173,221.80 = 36,576.40/x
  3. Step 3: Cross multiply
    115,470.40x = 173,221.80 × 36,576.40
  4. Step 4: Simplify right side
    115,470.40x = 6,335,829,845.52
  5. Step 5: Solve for x
    x = 6,335,829,845.52/115,470.40
  6. Step 6: Final answer
    x = 54,869.73

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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.