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Finding the Fourth Proportional to 188,456.70, 282,685.05 and 137,718.30

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Solution

The fourth proportional to 188,456.70, 282,685.05 and 137,718.30 is: 206,577.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,456.70 : 282,685.05 = 137,718.30 : x
  2. Step 2: Convert to fraction form
    188,456.70/282,685.05 = 137,718.30/x
  3. Step 3: Cross multiply
    188,456.70x = 282,685.05 × 137,718.30
  4. Step 4: Simplify right side
    188,456.70x = 38,930,904,521.42
  5. Step 5: Solve for x
    x = 38,930,904,521.42/188,456.70
  6. Step 6: Final answer
    x = 206,577.45

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1.5x scale

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.