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Finding the Fourth Proportional to 123,771.32, 170,806.62 and 67,182.68

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Solution

The fourth proportional to 123,771.32, 170,806.62 and 67,182.68 is: 92,713.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,771.32 : 170,806.62 = 67,182.68 : x
  2. Step 2: Convert to fraction form
    123,771.32/170,806.62 = 67,182.68/x
  3. Step 3: Cross multiply
    123,771.32x = 170,806.62 × 67,182.68
  4. Step 4: Simplify right side
    123,771.32x = 11,475,246,493.34
  5. Step 5: Solve for x
    x = 11,475,246,493.34/123,771.32
  6. Step 6: Final answer
    x = 92,713.29

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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.