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Finding the Fourth Proportional to 40,353.88, 55,686.80 and 22,448.30

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Solution

The fourth proportional to 40,353.88, 55,686.80 and 22,448.30 is: 30,977.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,353.88 : 55,686.80 = 22,448.30 : x
  2. Step 2: Convert to fraction form
    40,353.88/55,686.80 = 22,448.30/x
  3. Step 3: Cross multiply
    40,353.88x = 55,686.80 × 22,448.30
  4. Step 4: Simplify right side
    40,353.88x = 1,250,073,992.44
  5. Step 5: Solve for x
    x = 1,250,073,992.44/40,353.88
  6. Step 6: Final answer
    x = 30,977.79

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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.