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Finding the Fourth Proportional to 126,901.80, 190,352.70 and 116,404.20

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Solution

The fourth proportional to 126,901.80, 190,352.70 and 116,404.20 is: 174,606.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,901.80 : 190,352.70 = 116,404.20 : x
  2. Step 2: Convert to fraction form
    126,901.80/190,352.70 = 116,404.20/x
  3. Step 3: Cross multiply
    126,901.80x = 190,352.70 × 116,404.20
  4. Step 4: Simplify right side
    126,901.80x = 22,157,853,761.34
  5. Step 5: Solve for x
    x = 22,157,853,761.34/126,901.80
  6. Step 6: Final answer
    x = 174,606.30

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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.