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Finding the Fourth Proportional to 123,436.46, 170,341.95 and 66,847.82

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Solution

The fourth proportional to 123,436.46, 170,341.95 and 66,847.82 is: 92,249.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,436.46 : 170,341.95 = 66,847.82 : x
  2. Step 2: Convert to fraction form
    123,436.46/170,341.95 = 66,847.82/x
  3. Step 3: Cross multiply
    123,436.46x = 170,341.95 × 66,847.82
  4. Step 4: Simplify right side
    123,436.46x = 11,386,988,012.05
  5. Step 5: Solve for x
    x = 11,386,988,012.05/123,436.46
  6. Step 6: Final answer
    x = 92,249.79

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.