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Finding the Fourth Proportional to 27,324,057.20, 40,986,085.80 and 7,129,299.20

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Solution

The fourth proportional to 27,324,057.20, 40,986,085.80 and 7,129,299.20 is: 10,693,948.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,324,057.20 : 40,986,085.80 = 7,129,299.20 : x
  2. Step 2: Convert to fraction form
    27,324,057.20/40,986,085.80 = 7,129,299.20/x
  3. Step 3: Cross multiply
    27,324,057.20x = 40,986,085.80 × 7,129,299.20
  4. Step 4: Simplify right side
    27,324,057.20x = 292,202,068,705,071.38
  5. Step 5: Solve for x
    x = 292,202,068,705,071.38/27,324,057.20
  6. Step 6: Final answer
    x = 10,693,948.80

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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.