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Finding the Fourth Proportional to 113,086.71, 169,371.70 and 53,963.90

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Solution

The fourth proportional to 113,086.71, 169,371.70 and 53,963.90 is: 80,822.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,086.71 : 169,371.70 = 53,963.90 : x
  2. Step 2: Convert to fraction form
    113,086.71/169,371.70 = 53,963.90/x
  3. Step 3: Cross multiply
    113,086.71x = 169,371.70 × 53,963.90
  4. Step 4: Simplify right side
    113,086.71x = 9,139,956,634.77
  5. Step 5: Solve for x
    x = 9,139,956,634.77/113,086.71
  6. Step 6: Final answer
    x = 80,822.56

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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.