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Finding the Fourth Proportional to 5,714.92, 7,884.84 and 3,724.75

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Solution

The fourth proportional to 5,714.92, 7,884.84 and 3,724.75 is: 5,139.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,714.92 : 7,884.84 = 3,724.75 : x
  2. Step 2: Convert to fraction form
    5,714.92/7,884.84 = 3,724.75/x
  3. Step 3: Cross multiply
    5,714.92x = 7,884.84 × 3,724.75
  4. Step 4: Simplify right side
    5,714.92x = 29,369,057.79
  5. Step 5: Solve for x
    x = 29,369,057.79/5,714.92
  6. Step 6: Final answer
    x = 5,139.01

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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.