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Finding the Fourth Proportional to 16,610.78, 24,916.20 and 4,298.78

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Solution

The fourth proportional to 16,610.78, 24,916.20 and 4,298.78 is: 6,448.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,610.78 : 24,916.20 = 4,298.78 : x
  2. Step 2: Convert to fraction form
    16,610.78/24,916.20 = 4,298.78/x
  3. Step 3: Cross multiply
    16,610.78x = 24,916.20 × 4,298.78
  4. Step 4: Simplify right side
    16,610.78x = 107,109,262.24
  5. Step 5: Solve for x
    x = 107,109,262.24/16,610.78
  6. Step 6: Final answer
    x = 6,448.18

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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.