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Finding the Fourth Proportional to 122,873.91, 169,478.65 and 82,017.44

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Solution

The fourth proportional to 122,873.91, 169,478.65 and 82,017.44 is: 113,125.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,873.91 : 169,478.65 = 82,017.44 : x
  2. Step 2: Convert to fraction form
    122,873.91/169,478.65 = 82,017.44/x
  3. Step 3: Cross multiply
    122,873.91x = 169,478.65 × 82,017.44
  4. Step 4: Simplify right side
    122,873.91x = 13,900,203,919.33
  5. Step 5: Solve for x
    x = 13,900,203,919.33/122,873.91
  6. Step 6: Final answer
    x = 113,125.76

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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.