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Finding the Fourth Proportional to 125,672.49, 188,535.12 and 36,918.48

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Solution

The fourth proportional to 125,672.49, 188,535.12 and 36,918.48 is: 55,385.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,672.49 : 188,535.12 = 36,918.48 : x
  2. Step 2: Convert to fraction form
    125,672.49/188,535.12 = 36,918.48/x
  3. Step 3: Cross multiply
    125,672.49x = 188,535.12 × 36,918.48
  4. Step 4: Simplify right side
    125,672.49x = 6,960,430,057.02
  5. Step 5: Solve for x
    x = 6,960,430,057.02/125,672.49
  6. Step 6: Final answer
    x = 55,385.47

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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.