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Finding the Fourth Proportional to 5,008.50, 6,909.21 and 3,216.42

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Solution

The fourth proportional to 5,008.50, 6,909.21 and 3,216.42 is: 4,437.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,008.50 : 6,909.21 = 3,216.42 : x
  2. Step 2: Convert to fraction form
    5,008.50/6,909.21 = 3,216.42/x
  3. Step 3: Cross multiply
    5,008.50x = 6,909.21 × 3,216.42
  4. Step 4: Simplify right side
    5,008.50x = 22,222,921.23
  5. Step 5: Solve for x
    x = 22,222,921.23/5,008.50
  6. Step 6: Final answer
    x = 4,437.04

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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.