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Finding the Fourth Proportional to 7,251.87, 10,007.78 and 4,108.53

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Solution

The fourth proportional to 7,251.87, 10,007.78 and 4,108.53 is: 5,669.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,251.87 : 10,007.78 = 4,108.53 : x
  2. Step 2: Convert to fraction form
    7,251.87/10,007.78 = 4,108.53/x
  3. Step 3: Cross multiply
    7,251.87x = 10,007.78 × 4,108.53
  4. Step 4: Simplify right side
    7,251.87x = 41,117,243.82
  5. Step 5: Solve for x
    x = 41,117,243.82/7,251.87
  6. Step 6: Final answer
    x = 5,669.88

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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.