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Finding the Fourth Proportional to 125,456.80, 188,212.20 and 36,703.48

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Solution

The fourth proportional to 125,456.80, 188,212.20 and 36,703.48 is: 55,063.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,456.80 : 188,212.20 = 36,703.48 : x
  2. Step 2: Convert to fraction form
    125,456.80/188,212.20 = 36,703.48/x
  3. Step 3: Cross multiply
    125,456.80x = 188,212.20 × 36,703.48
  4. Step 4: Simplify right side
    125,456.80x = 6,908,042,718.46
  5. Step 5: Solve for x
    x = 6,908,042,718.46/125,456.80
  6. Step 6: Final answer
    x = 55,063.12

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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.