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Finding the Fourth Proportional to 17,696.34, 26,531.64 and 8,331.16

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Solution

The fourth proportional to 17,696.34, 26,531.64 and 8,331.16 is: 12,490.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,696.34 : 26,531.64 = 8,331.16 : x
  2. Step 2: Convert to fraction form
    17,696.34/26,531.64 = 8,331.16/x
  3. Step 3: Cross multiply
    17,696.34x = 26,531.64 × 8,331.16
  4. Step 4: Simplify right side
    17,696.34x = 221,039,337.90
  5. Step 5: Solve for x
    x = 221,039,337.90/17,696.34
  6. Step 6: Final answer
    x = 12,490.68

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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.