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Finding the Fourth Proportional to 5,417.28, 7,475.88 and 3,059.28

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Solution

The fourth proportional to 5,417.28, 7,475.88 and 3,059.28 is: 4,221.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.28 : 7,475.88 = 3,059.28 : x
  2. Step 2: Convert to fraction form
    5,417.28/7,475.88 = 3,059.28/x
  3. Step 3: Cross multiply
    5,417.28x = 7,475.88 × 3,059.28
  4. Step 4: Simplify right side
    5,417.28x = 22,870,810.17
  5. Step 5: Solve for x
    x = 22,870,810.17/5,417.28
  6. Step 6: Final answer
    x = 4,221.83

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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.