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Finding the Fourth Proportional to 5,274.99, 7,279.49 and 2,917.13

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Solution

The fourth proportional to 5,274.99, 7,279.49 and 2,917.13 is: 4,025.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,274.99 : 7,279.49 = 2,917.13 : x
  2. Step 2: Convert to fraction form
    5,274.99/7,279.49 = 2,917.13/x
  3. Step 3: Cross multiply
    5,274.99x = 7,279.49 × 2,917.13
  4. Step 4: Simplify right side
    5,274.99x = 21,235,189.56
  5. Step 5: Solve for x
    x = 21,235,189.56/5,274.99
  6. Step 6: Final answer
    x = 4,025.64

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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.