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Finding the Fourth Proportional to 125,716.88, 173,493.96 and 75,406.16

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Solution

The fourth proportional to 125,716.88, 173,493.96 and 75,406.16 is: 104,063.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,716.88 : 173,493.96 = 75,406.16 : x
  2. Step 2: Convert to fraction form
    125,716.88/173,493.96 = 75,406.16/x
  3. Step 3: Cross multiply
    125,716.88x = 173,493.96 × 75,406.16
  4. Step 4: Simplify right side
    125,716.88x = 13,082,513,306.79
  5. Step 5: Solve for x
    x = 13,082,513,306.79/125,716.88
  6. Step 6: Final answer
    x = 104,063.30

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1.5x scale

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.