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Finding the Fourth Proportional to 125,766.88, 173,568.80 and 69,188.64

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Solution

The fourth proportional to 125,766.88, 173,568.80 and 69,188.64 is: 95,486.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,766.88 : 173,568.80 = 69,188.64 : x
  2. Step 2: Convert to fraction form
    125,766.88/173,568.80 = 69,188.64/x
  3. Step 3: Cross multiply
    125,766.88x = 173,568.80 × 69,188.64
  4. Step 4: Simplify right side
    125,766.88x = 12,008,989,218.43
  5. Step 5: Solve for x
    x = 12,008,989,218.43/125,766.88
  6. Step 6: Final answer
    x = 95,486.10

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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.