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Finding the Fourth Proportional to 5,275.14, 7,279.41 and 2,917.14

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Solution

The fourth proportional to 5,275.14, 7,279.41 and 2,917.14 is: 4,025.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.14 : 7,279.41 = 2,917.14 : x
  2. Step 2: Convert to fraction form
    5,275.14/7,279.41 = 2,917.14/x
  3. Step 3: Cross multiply
    5,275.14x = 7,279.41 × 2,917.14
  4. Step 4: Simplify right side
    5,275.14x = 21,235,058.09
  5. Step 5: Solve for x
    x = 21,235,058.09/5,275.14
  6. Step 6: Final answer
    x = 4,025.50

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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.