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Finding the Fourth Proportional to 123,326.93, 170,191.15 and 66,738.30

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Solution

The fourth proportional to 123,326.93, 170,191.15 and 66,738.30 is: 92,098.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,326.93 : 170,191.15 = 66,738.30 : x
  2. Step 2: Convert to fraction form
    123,326.93/170,191.15 = 66,738.30/x
  3. Step 3: Cross multiply
    123,326.93x = 170,191.15 × 66,738.30
  4. Step 4: Simplify right side
    123,326.93x = 11,358,268,026.05
  5. Step 5: Solve for x
    x = 11,358,268,026.05/123,326.93
  6. Step 6: Final answer
    x = 92,098.85

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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.