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Finding the Fourth Proportional to 61,325.28, 91,921.80 and 29,668.45

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Solution

The fourth proportional to 61,325.28, 91,921.80 and 29,668.45 is: 44,470.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,325.28 : 91,921.80 = 29,668.45 : x
  2. Step 2: Convert to fraction form
    61,325.28/91,921.80 = 29,668.45/x
  3. Step 3: Cross multiply
    61,325.28x = 91,921.80 × 29,668.45
  4. Step 4: Simplify right side
    61,325.28x = 2,727,177,327.21
  5. Step 5: Solve for x
    x = 2,727,177,327.21/61,325.28
  6. Step 6: Final answer
    x = 44,470.69

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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.