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Finding the Fourth Proportional to 7,216.56, 10,812.96 and 6,943.32

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Solution

The fourth proportional to 7,216.56, 10,812.96 and 6,943.32 is: 10,403.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,216.56 : 10,812.96 = 6,943.32 : x
  2. Step 2: Convert to fraction form
    7,216.56/10,812.96 = 6,943.32/x
  3. Step 3: Cross multiply
    7,216.56x = 10,812.96 × 6,943.32
  4. Step 4: Simplify right side
    7,216.56x = 75,077,841.43
  5. Step 5: Solve for x
    x = 75,077,841.43/7,216.56
  6. Step 6: Final answer
    x = 10,403.55

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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.