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Finding the Fourth Proportional to 38,842.80, 53,589.24 and 22,919.28

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Solution

The fourth proportional to 38,842.80, 53,589.24 and 22,919.28 is: 31,620.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,842.80 : 53,589.24 = 22,919.28 : x
  2. Step 2: Convert to fraction form
    38,842.80/53,589.24 = 22,919.28/x
  3. Step 3: Cross multiply
    38,842.80x = 53,589.24 × 22,919.28
  4. Step 4: Simplify right side
    38,842.80x = 1,228,226,796.55
  5. Step 5: Solve for x
    x = 1,228,226,796.55/38,842.80
  6. Step 6: Final answer
    x = 31,620.45

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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.