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Finding the Fourth Proportional to 122,874.41, 169,479.34 and 82,017.94

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Solution

The fourth proportional to 122,874.41, 169,479.34 and 82,017.94 is: 113,126.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,874.41 : 169,479.34 = 82,017.94 : x
  2. Step 2: Convert to fraction form
    122,874.41/169,479.34 = 82,017.94/x
  3. Step 3: Cross multiply
    122,874.41x = 169,479.34 × 82,017.94
  4. Step 4: Simplify right side
    122,874.41x = 13,900,345,081.87
  5. Step 5: Solve for x
    x = 13,900,345,081.87/122,874.41
  6. Step 6: Final answer
    x = 113,126.44

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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.