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Finding the Fourth Proportional to 7,216.77, 9,960.80 and 4,233.56

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Solution

The fourth proportional to 7,216.77, 9,960.80 and 4,233.56 is: 5,843.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,216.77 : 9,960.80 = 4,233.56 : x
  2. Step 2: Convert to fraction form
    7,216.77/9,960.80 = 4,233.56/x
  3. Step 3: Cross multiply
    7,216.77x = 9,960.80 × 4,233.56
  4. Step 4: Simplify right side
    7,216.77x = 42,169,610.83
  5. Step 5: Solve for x
    x = 42,169,610.83/7,216.77
  6. Step 6: Final answer
    x = 5,843.28

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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.