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Finding the Fourth Proportional to 4,700.91, 6,472.49 and 3,991.27

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Solution

The fourth proportional to 4,700.91, 6,472.49 and 3,991.27 is: 5,495.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,700.91 : 6,472.49 = 3,991.27 : x
  2. Step 2: Convert to fraction form
    4,700.91/6,472.49 = 3,991.27/x
  3. Step 3: Cross multiply
    4,700.91x = 6,472.49 × 3,991.27
  4. Step 4: Simplify right side
    4,700.91x = 25,833,455.16
  5. Step 5: Solve for x
    x = 25,833,455.16/4,700.91
  6. Step 6: Final answer
    x = 5,495.42

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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.