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Finding the Fourth Proportional to 7,228.18, 9,983.10 and 4,866.22

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Solution

The fourth proportional to 7,228.18, 9,983.10 and 4,866.22 is: 6,720.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,228.18 : 9,983.10 = 4,866.22 : x
  2. Step 2: Convert to fraction form
    7,228.18/9,983.10 = 4,866.22/x
  3. Step 3: Cross multiply
    7,228.18x = 9,983.10 × 4,866.22
  4. Step 4: Simplify right side
    7,228.18x = 48,579,960.88
  5. Step 5: Solve for x
    x = 48,579,960.88/7,228.18
  6. Step 6: Final answer
    x = 6,720.91

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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.