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Finding the Fourth Proportional to 123,241.68, 170,073.57 and 66,653.04

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Solution

The fourth proportional to 123,241.68, 170,073.57 and 66,653.04 is: 91,981.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,241.68 : 170,073.57 = 66,653.04 : x
  2. Step 2: Convert to fraction form
    123,241.68/170,073.57 = 66,653.04/x
  3. Step 3: Cross multiply
    123,241.68x = 170,073.57 × 66,653.04
  4. Step 4: Simplify right side
    123,241.68x = 11,335,920,464.15
  5. Step 5: Solve for x
    x = 11,335,920,464.15/123,241.68
  6. Step 6: Final answer
    x = 91,981.22

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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.