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Finding the Fourth Proportional to 118,141.62, 162,943.29 and 75,704.10

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Solution

The fourth proportional to 118,141.62, 162,943.29 and 75,704.10 is: 104,412.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,141.62 : 162,943.29 = 75,704.10 : x
  2. Step 2: Convert to fraction form
    118,141.62/162,943.29 = 75,704.10/x
  3. Step 3: Cross multiply
    118,141.62x = 162,943.29 × 75,704.10
  4. Step 4: Simplify right side
    118,141.62x = 12,335,475,120.49
  5. Step 5: Solve for x
    x = 12,335,475,120.49/118,141.62
  6. Step 6: Final answer
    x = 104,412.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.