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Finding the Fourth Proportional to 48,447.44, 66,815.84 and 31,434.92

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Solution

The fourth proportional to 48,447.44, 66,815.84 and 31,434.92 is: 43,353.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,447.44 : 66,815.84 = 31,434.92 : x
  2. Step 2: Convert to fraction form
    48,447.44/66,815.84 = 31,434.92/x
  3. Step 3: Cross multiply
    48,447.44x = 66,815.84 × 31,434.92
  4. Step 4: Simplify right side
    48,447.44x = 2,100,350,427.96
  5. Step 5: Solve for x
    x = 2,100,350,427.96/48,447.44
  6. Step 6: Final answer
    x = 43,353.18

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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.