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Finding the Fourth Proportional to 5,240.76, 7,232.28 and 2,883

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Solution

The fourth proportional to 5,240.76, 7,232.28 and 2,883 is: 3,978.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,240.76 : 7,232.28 = 2,883 : x
  2. Step 2: Convert to fraction form
    5,240.76/7,232.28 = 2,883/x
  3. Step 3: Cross multiply
    5,240.76x = 7,232.28 × 2,883
  4. Step 4: Simplify right side
    5,240.76x = 20,850,663.24
  5. Step 5: Solve for x
    x = 20,850,663.24/5,240.76
  6. Step 6: Final answer
    x = 3,978.56

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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.