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Finding the Fourth Proportional to 16,874.35, 23,285.98 and 9,321

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Solution

The fourth proportional to 16,874.35, 23,285.98 and 9,321 is: 12,862.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,874.35 : 23,285.98 = 9,321 : x
  2. Step 2: Convert to fraction form
    16,874.35/23,285.98 = 9,321/x
  3. Step 3: Cross multiply
    16,874.35x = 23,285.98 × 9,321
  4. Step 4: Simplify right side
    16,874.35x = 217,048,619.58
  5. Step 5: Solve for x
    x = 217,048,619.58/16,874.35
  6. Step 6: Final answer
    x = 12,862.64

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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.