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Finding the Fourth Proportional to 141,963.17, 213,039.45 and 73,637.69

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Solution

The fourth proportional to 141,963.17, 213,039.45 and 73,637.69 is: 110,505.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,963.17 : 213,039.45 = 73,637.69 : x
  2. Step 2: Convert to fraction form
    141,963.17/213,039.45 = 73,637.69/x
  3. Step 3: Cross multiply
    141,963.17x = 213,039.45 × 73,637.69
  4. Step 4: Simplify right side
    141,963.17x = 15,687,732,976.87
  5. Step 5: Solve for x
    x = 15,687,732,976.87/141,963.17
  6. Step 6: Final answer
    x = 110,505.65

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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.