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Finding the Fourth Proportional to 28,375.74, 42,563.52 and 28,334.70

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Solution

The fourth proportional to 28,375.74, 42,563.52 and 28,334.70 is: 42,501.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,375.74 : 42,563.52 = 28,334.70 : x
  2. Step 2: Convert to fraction form
    28,375.74/42,563.52 = 28,334.70/x
  3. Step 3: Cross multiply
    28,375.74x = 42,563.52 × 28,334.70
  4. Step 4: Simplify right side
    28,375.74x = 1,206,024,570.14
  5. Step 5: Solve for x
    x = 1,206,024,570.14/28,375.74
  6. Step 6: Final answer
    x = 42,501.96

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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.