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Finding the Fourth Proportional to 7,216.92, 9,964.98 and 5,649.48

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Solution

The fourth proportional to 7,216.92, 9,964.98 and 5,649.48 is: 7,800.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,216.92 : 9,964.98 = 5,649.48 : x
  2. Step 2: Convert to fraction form
    7,216.92/9,964.98 = 5,649.48/x
  3. Step 3: Cross multiply
    7,216.92x = 9,964.98 × 5,649.48
  4. Step 4: Simplify right side
    7,216.92x = 56,296,955.21
  5. Step 5: Solve for x
    x = 56,296,955.21/7,216.92
  6. Step 6: Final answer
    x = 7,800.69

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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.