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Finding the Fourth Proportional to 5,415.12, 7,472.76 and 3,552

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Solution

The fourth proportional to 5,415.12, 7,472.76 and 3,552 is: 4,901.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.12 : 7,472.76 = 3,552 : x
  2. Step 2: Convert to fraction form
    5,415.12/7,472.76 = 3,552/x
  3. Step 3: Cross multiply
    5,415.12x = 7,472.76 × 3,552
  4. Step 4: Simplify right side
    5,415.12x = 26,543,243.52
  5. Step 5: Solve for x
    x = 26,543,243.52/5,415.12
  6. Step 6: Final answer
    x = 4,901.69

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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.