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Finding the Fourth Proportional to 12,363.66, 18,534.18 and 5,339.28

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Solution

The fourth proportional to 12,363.66, 18,534.18 and 5,339.28 is: 8,004.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,363.66 : 18,534.18 = 5,339.28 : x
  2. Step 2: Convert to fraction form
    12,363.66/18,534.18 = 5,339.28/x
  3. Step 3: Cross multiply
    12,363.66x = 18,534.18 × 5,339.28
  4. Step 4: Simplify right side
    12,363.66x = 98,959,176.59
  5. Step 5: Solve for x
    x = 98,959,176.59/12,363.66
  6. Step 6: Final answer
    x = 8,004.04

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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.