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Finding the Fourth Proportional to 5,517.32, 7,619.62 and 5,043.48

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Solution

The fourth proportional to 5,517.32, 7,619.62 and 5,043.48 is: 6,965.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,517.32 : 7,619.62 = 5,043.48 : x
  2. Step 2: Convert to fraction form
    5,517.32/7,619.62 = 5,043.48/x
  3. Step 3: Cross multiply
    5,517.32x = 7,619.62 × 5,043.48
  4. Step 4: Simplify right side
    5,517.32x = 38,429,401.08
  5. Step 5: Solve for x
    x = 38,429,401.08/5,517.32
  6. Step 6: Final answer
    x = 6,965.23

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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.