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Finding the Fourth Proportional to 5,479.56, 7,562.66 and 3,491

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Solution

The fourth proportional to 5,479.56, 7,562.66 and 3,491 is: 4,818.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.56 : 7,562.66 = 3,491 : x
  2. Step 2: Convert to fraction form
    5,479.56/7,562.66 = 3,491/x
  3. Step 3: Cross multiply
    5,479.56x = 7,562.66 × 3,491
  4. Step 4: Simplify right side
    5,479.56x = 26,401,246.06
  5. Step 5: Solve for x
    x = 26,401,246.06/5,479.56
  6. Step 6: Final answer
    x = 4,818.13

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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.