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Finding the Fourth Proportional to 47,230.20, 70,950.90 and 39,454.20

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Solution

The fourth proportional to 47,230.20, 70,950.90 and 39,454.20 is: 59,269.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,230.20 : 70,950.90 = 39,454.20 : x
  2. Step 2: Convert to fraction form
    47,230.20/70,950.90 = 39,454.20/x
  3. Step 3: Cross multiply
    47,230.20x = 70,950.90 × 39,454.20
  4. Step 4: Simplify right side
    47,230.20x = 2,799,310,998.78
  5. Step 5: Solve for x
    x = 2,799,310,998.78/47,230.20
  6. Step 6: Final answer
    x = 59,269.51

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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.