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Finding the Fourth Proportional to 26,441.94, 39,668.18 and 8,916.78

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Solution

The fourth proportional to 26,441.94, 39,668.18 and 8,916.78 is: 13,376.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,441.94 : 39,668.18 = 8,916.78 : x
  2. Step 2: Convert to fraction form
    26,441.94/39,668.18 = 8,916.78/x
  3. Step 3: Cross multiply
    26,441.94x = 39,668.18 × 8,916.78
  4. Step 4: Simplify right side
    26,441.94x = 353,712,434.06
  5. Step 5: Solve for x
    x = 353,712,434.06/26,441.94
  6. Step 6: Final answer
    x = 13,376.95

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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.