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Finding the Fourth Proportional to 71,733.20, 107,470.20 and 61,365.20

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Solution

The fourth proportional to 71,733.20, 107,470.20 and 61,365.20 is: 91,936.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,733.20 : 107,470.20 = 61,365.20 : x
  2. Step 2: Convert to fraction form
    71,733.20/107,470.20 = 61,365.20/x
  3. Step 3: Cross multiply
    71,733.20x = 107,470.20 × 61,365.20
  4. Step 4: Simplify right side
    71,733.20x = 6,594,930,317.04
  5. Step 5: Solve for x
    x = 6,594,930,317.04/71,733.20
  6. Step 6: Final answer
    x = 91,936.93

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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.