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Finding the Fourth Proportional to 125,422.64, 173,083.08 and 71,708.84

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Solution

The fourth proportional to 125,422.64, 173,083.08 and 71,708.84 is: 98,958.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,422.64 : 173,083.08 = 71,708.84 : x
  2. Step 2: Convert to fraction form
    125,422.64/173,083.08 = 71,708.84/x
  3. Step 3: Cross multiply
    125,422.64x = 173,083.08 × 71,708.84
  4. Step 4: Simplify right side
    125,422.64x = 12,411,586,890.43
  5. Step 5: Solve for x
    x = 12,411,586,890.43/125,422.64
  6. Step 6: Final answer
    x = 98,958.11

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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.