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Finding the Fourth Proportional to 66,338.92, 99,449.56 and 47,571.76

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Solution

The fourth proportional to 66,338.92, 99,449.56 and 47,571.76 is: 71,315.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,338.92 : 99,449.56 = 47,571.76 : x
  2. Step 2: Convert to fraction form
    66,338.92/99,449.56 = 47,571.76/x
  3. Step 3: Cross multiply
    66,338.92x = 99,449.56 × 47,571.76
  4. Step 4: Simplify right side
    66,338.92x = 4,730,990,600.43
  5. Step 5: Solve for x
    x = 4,730,990,600.43/66,338.92
  6. Step 6: Final answer
    x = 71,315.46

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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.