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Finding the Fourth Proportional to 123,759.16, 170,787.62 and 67,170.53

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Solution

The fourth proportional to 123,759.16, 170,787.62 and 67,170.53 is: 92,695.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,759.16 : 170,787.62 = 67,170.53 : x
  2. Step 2: Convert to fraction form
    123,759.16/170,787.62 = 67,170.53/x
  3. Step 3: Cross multiply
    123,759.16x = 170,787.62 × 67,170.53
  4. Step 4: Simplify right side
    123,759.16x = 11,471,895,547.73
  5. Step 5: Solve for x
    x = 11,471,895,547.73/123,759.16
  6. Step 6: Final answer
    x = 92,695.33

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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.