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Finding the Fourth Proportional to 76,019.20, 113,948.16 and 29,251.84

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Solution

The fourth proportional to 76,019.20, 113,948.16 and 29,251.84 is: 43,846.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,019.20 : 113,948.16 = 29,251.84 : x
  2. Step 2: Convert to fraction form
    76,019.20/113,948.16 = 29,251.84/x
  3. Step 3: Cross multiply
    76,019.20x = 113,948.16 × 29,251.84
  4. Step 4: Simplify right side
    76,019.20x = 3,333,193,344.61
  5. Step 5: Solve for x
    x = 3,333,193,344.61/76,019.20
  6. Step 6: Final answer
    x = 43,846.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.