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Finding the Fourth Proportional to 4,049.68, 5,591.64 and 3,985.12

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Solution

The fourth proportional to 4,049.68, 5,591.64 and 3,985.12 is: 5,502.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,049.68 : 5,591.64 = 3,985.12 : x
  2. Step 2: Convert to fraction form
    4,049.68/5,591.64 = 3,985.12/x
  3. Step 3: Cross multiply
    4,049.68x = 5,591.64 × 3,985.12
  4. Step 4: Simplify right side
    4,049.68x = 22,283,356.40
  5. Step 5: Solve for x
    x = 22,283,356.40/4,049.68
  6. Step 6: Final answer
    x = 5,502.50

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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.