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Finding the Fourth Proportional to 54,505.44, 81,780.84 and 28,216.08

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Solution

The fourth proportional to 54,505.44, 81,780.84 and 28,216.08 is: 42,335.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,505.44 : 81,780.84 = 28,216.08 : x
  2. Step 2: Convert to fraction form
    54,505.44/81,780.84 = 28,216.08/x
  3. Step 3: Cross multiply
    54,505.44x = 81,780.84 × 28,216.08
  4. Step 4: Simplify right side
    54,505.44x = 2,307,534,723.91
  5. Step 5: Solve for x
    x = 2,307,534,723.91/54,505.44
  6. Step 6: Final answer
    x = 42,335.86

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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.