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Finding the Fourth Proportional to 22,916.77, 34,378.45 and 8,690.48

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Solution

The fourth proportional to 22,916.77, 34,378.45 and 8,690.48 is: 13,036.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,916.77 : 34,378.45 = 8,690.48 : x
  2. Step 2: Convert to fraction form
    22,916.77/34,378.45 = 8,690.48/x
  3. Step 3: Cross multiply
    22,916.77x = 34,378.45 × 8,690.48
  4. Step 4: Simplify right side
    22,916.77x = 298,765,296.38
  5. Step 5: Solve for x
    x = 298,765,296.38/22,916.77
  6. Step 6: Final answer
    x = 13,036.97

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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.