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Finding the Fourth Proportional to 125,791.76, 173,595.88 and 68,434.64

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Solution

The fourth proportional to 125,791.76, 173,595.88 and 68,434.64 is: 94,441.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,791.76 : 173,595.88 = 68,434.64 : x
  2. Step 2: Convert to fraction form
    125,791.76/173,595.88 = 68,434.64/x
  3. Step 3: Cross multiply
    125,791.76x = 173,595.88 × 68,434.64
  4. Step 4: Simplify right side
    125,791.76x = 11,879,971,553.28
  5. Step 5: Solve for x
    x = 11,879,971,553.28/125,791.76
  6. Step 6: Final answer
    x = 94,441.57

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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.