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Finding the Fourth Proportional to 172,866.80, 238,538.68 and 96,378.65

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Solution

The fourth proportional to 172,866.80, 238,538.68 and 96,378.65 is: 132,992.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,866.80 : 238,538.68 = 96,378.65 : x
  2. Step 2: Convert to fraction form
    172,866.80/238,538.68 = 96,378.65/x
  3. Step 3: Cross multiply
    172,866.80x = 238,538.68 × 96,378.65
  4. Step 4: Simplify right side
    172,866.80x = 22,990,035,951.18
  5. Step 5: Solve for x
    x = 22,990,035,951.18/172,866.80
  6. Step 6: Final answer
    x = 132,992.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.