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Finding the Fourth Proportional to 10,484.92, 15,718.02 and 3,911.41

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Solution

The fourth proportional to 10,484.92, 15,718.02 and 3,911.41 is: 5,863.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,484.92 : 15,718.02 = 3,911.41 : x
  2. Step 2: Convert to fraction form
    10,484.92/15,718.02 = 3,911.41/x
  3. Step 3: Cross multiply
    10,484.92x = 15,718.02 × 3,911.41
  4. Step 4: Simplify right side
    10,484.92x = 61,479,620.61
  5. Step 5: Solve for x
    x = 61,479,620.61/10,484.92
  6. Step 6: Final answer
    x = 5,863.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.