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Finding the Fourth Proportional to 124,108.80, 186,092.68 and 84,713.60

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Solution

The fourth proportional to 124,108.80, 186,092.68 and 84,713.60 is: 127,022.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,108.80 : 186,092.68 = 84,713.60 : x
  2. Step 2: Convert to fraction form
    124,108.80/186,092.68 = 84,713.60/x
  3. Step 3: Cross multiply
    124,108.80x = 186,092.68 × 84,713.60
  4. Step 4: Simplify right side
    124,108.80x = 15,764,580,856.45
  5. Step 5: Solve for x
    x = 15,764,580,856.45/124,108.80
  6. Step 6: Final answer
    x = 127,022.26

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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.