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Finding the Fourth Proportional to 125,459.60, 173,122.56 and 74,463.56

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Solution

The fourth proportional to 125,459.60, 173,122.56 and 74,463.56 is: 102,752.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,459.60 : 173,122.56 = 74,463.56 : x
  2. Step 2: Convert to fraction form
    125,459.60/173,122.56 = 74,463.56/x
  3. Step 3: Cross multiply
    125,459.60x = 173,122.56 × 74,463.56
  4. Step 4: Simplify right side
    125,459.60x = 12,891,322,133.91
  5. Step 5: Solve for x
    x = 12,891,322,133.91/125,459.60
  6. Step 6: Final answer
    x = 102,752.78

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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.