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Finding the Fourth Proportional to 126,469.90, 190,032.90 and 112,035.70

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Solution

The fourth proportional to 126,469.90, 190,032.90 and 112,035.70 is: 168,344.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,469.90 : 190,032.90 = 112,035.70 : x
  2. Step 2: Convert to fraction form
    126,469.90/190,032.90 = 112,035.70/x
  3. Step 3: Cross multiply
    126,469.90x = 190,032.90 × 112,035.70
  4. Step 4: Simplify right side
    126,469.90x = 21,290,468,974.53
  5. Step 5: Solve for x
    x = 21,290,468,974.53/126,469.90
  6. Step 6: Final answer
    x = 168,344.16

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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.