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Finding the Fourth Proportional to 144,414.48, 216,709.20 and 55,729.20

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Solution

The fourth proportional to 144,414.48, 216,709.20 and 55,729.20 is: 83,627.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,414.48 : 216,709.20 = 55,729.20 : x
  2. Step 2: Convert to fraction form
    144,414.48/216,709.20 = 55,729.20/x
  3. Step 3: Cross multiply
    144,414.48x = 216,709.20 × 55,729.20
  4. Step 4: Simplify right side
    144,414.48x = 12,077,030,348.64
  5. Step 5: Solve for x
    x = 12,077,030,348.64/144,414.48
  6. Step 6: Final answer
    x = 83,627.56

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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.