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Finding the Fourth Proportional to 73,668.18, 109,882.56 and 71,454.45

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Solution

The fourth proportional to 73,668.18, 109,882.56 and 71,454.45 is: 106,580.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,668.18 : 109,882.56 = 71,454.45 : x
  2. Step 2: Convert to fraction form
    73,668.18/109,882.56 = 71,454.45/x
  3. Step 3: Cross multiply
    73,668.18x = 109,882.56 × 71,454.45
  4. Step 4: Simplify right side
    73,668.18x = 7,851,598,167.47
  5. Step 5: Solve for x
    x = 7,851,598,167.47/73,668.18
  6. Step 6: Final answer
    x = 106,580.59

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.