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Finding the Fourth Proportional to 19,013.19, 28,524.64 and 7,916.19

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Solution

The fourth proportional to 19,013.19, 28,524.64 and 7,916.19 is: 11,876.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,013.19 : 28,524.64 = 7,916.19 : x
  2. Step 2: Convert to fraction form
    19,013.19/28,524.64 = 7,916.19/x
  3. Step 3: Cross multiply
    19,013.19x = 28,524.64 × 7,916.19
  4. Step 4: Simplify right side
    19,013.19x = 225,806,469.92
  5. Step 5: Solve for x
    x = 225,806,469.92/19,013.19
  6. Step 6: Final answer
    x = 11,876.31

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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.