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Finding the Fourth Proportional to 125,709.80, 173,476.68 and 68,348.30

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Solution

The fourth proportional to 125,709.80, 173,476.68 and 68,348.30 is: 94,319.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,709.80 : 173,476.68 = 68,348.30 : x
  2. Step 2: Convert to fraction form
    125,709.80/173,476.68 = 68,348.30/x
  3. Step 3: Cross multiply
    125,709.80x = 173,476.68 × 68,348.30
  4. Step 4: Simplify right side
    125,709.80x = 11,856,836,167.64
  5. Step 5: Solve for x
    x = 11,856,836,167.64/125,709.80
  6. Step 6: Final answer
    x = 94,319.11

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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.