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Finding the Fourth Proportional to 87,249.45, 130,791 and 28,043.52

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Solution

The fourth proportional to 87,249.45, 130,791 and 28,043.52 is: 42,038.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,249.45 : 130,791 = 28,043.52 : x
  2. Step 2: Convert to fraction form
    87,249.45/130,791 = 28,043.52/x
  3. Step 3: Cross multiply
    87,249.45x = 130,791 × 28,043.52
  4. Step 4: Simplify right side
    87,249.45x = 3,667,840,024.32
  5. Step 5: Solve for x
    x = 3,667,840,024.32/87,249.45
  6. Step 6: Final answer
    x = 42,038.55

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.