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Finding the Fourth Proportional to 16,916.80, 25,375.20 and 4,436.80

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Solution

The fourth proportional to 16,916.80, 25,375.20 and 4,436.80 is: 6,655.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,916.80 : 25,375.20 = 4,436.80 : x
  2. Step 2: Convert to fraction form
    16,916.80/25,375.20 = 4,436.80/x
  3. Step 3: Cross multiply
    16,916.80x = 25,375.20 × 4,436.80
  4. Step 4: Simplify right side
    16,916.80x = 112,584,687.36
  5. Step 5: Solve for x
    x = 112,584,687.36/16,916.80
  6. Step 6: Final answer
    x = 6,655.20

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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.