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Finding the Fourth Proportional to 51,248.80, 70,723.73 and 28,589.27

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Solution

The fourth proportional to 51,248.80, 70,723.73 and 28,589.27 is: 39,453.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,248.80 : 70,723.73 = 28,589.27 : x
  2. Step 2: Convert to fraction form
    51,248.80/70,723.73 = 28,589.27/x
  3. Step 3: Cross multiply
    51,248.80x = 70,723.73 × 28,589.27
  4. Step 4: Simplify right side
    51,248.80x = 2,021,939,669.43
  5. Step 5: Solve for x
    x = 2,021,939,669.43/51,248.80
  6. Step 6: Final answer
    x = 39,453.41

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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.