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Finding the Fourth Proportional to 7,952.92, 11,921.18 and 5,756.20

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Solution

The fourth proportional to 7,952.92, 11,921.18 and 5,756.20 is: 8,628.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,952.92 : 11,921.18 = 5,756.20 : x
  2. Step 2: Convert to fraction form
    7,952.92/11,921.18 = 5,756.20/x
  3. Step 3: Cross multiply
    7,952.92x = 11,921.18 × 5,756.20
  4. Step 4: Simplify right side
    7,952.92x = 68,620,696.32
  5. Step 5: Solve for x
    x = 68,620,696.32/7,952.92
  6. Step 6: Final answer
    x = 8,628.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.