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Finding the Fourth Proportional to 42,891.45, 64,197.44 and 38,799.33

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Solution

The fourth proportional to 42,891.45, 64,197.44 and 38,799.33 is: 58,072.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,891.45 : 64,197.44 = 38,799.33 : x
  2. Step 2: Convert to fraction form
    42,891.45/64,197.44 = 38,799.33/x
  3. Step 3: Cross multiply
    42,891.45x = 64,197.44 × 38,799.33
  4. Step 4: Simplify right side
    42,891.45x = 2,490,817,659.72
  5. Step 5: Solve for x
    x = 2,490,817,659.72/42,891.45
  6. Step 6: Final answer
    x = 58,072.59

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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.