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Finding the Fourth Proportional to 171,358.80, 256,906.40 and 87,049.68

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Solution

The fourth proportional to 171,358.80, 256,906.40 and 87,049.68 is: 130,507.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,358.80 : 256,906.40 = 87,049.68 : x
  2. Step 2: Convert to fraction form
    171,358.80/256,906.40 = 87,049.68/x
  3. Step 3: Cross multiply
    171,358.80x = 256,906.40 × 87,049.68
  4. Step 4: Simplify right side
    171,358.80x = 22,363,619,909.95
  5. Step 5: Solve for x
    x = 22,363,619,909.95/171,358.80
  6. Step 6: Final answer
    x = 130,507.57

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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.