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Finding the Fourth Proportional to 17,639.57, 26,428.57 and 14,696.91

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Solution

The fourth proportional to 17,639.57, 26,428.57 and 14,696.91 is: 22,019.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,639.57 : 26,428.57 = 14,696.91 : x
  2. Step 2: Convert to fraction form
    17,639.57/26,428.57 = 14,696.91/x
  3. Step 3: Cross multiply
    17,639.57x = 26,428.57 × 14,696.91
  4. Step 4: Simplify right side
    17,639.57x = 388,418,277.98
  5. Step 5: Solve for x
    x = 388,418,277.98/17,639.57
  6. Step 6: Final answer
    x = 22,019.71

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1.5x scale

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.