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Finding the Fourth Proportional to 16,956.80, 25,435.20 and 4,476.80

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Solution

The fourth proportional to 16,956.80, 25,435.20 and 4,476.80 is: 6,715.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,956.80 : 25,435.20 = 4,476.80 : x
  2. Step 2: Convert to fraction form
    16,956.80/25,435.20 = 4,476.80/x
  3. Step 3: Cross multiply
    16,956.80x = 25,435.20 × 4,476.80
  4. Step 4: Simplify right side
    16,956.80x = 113,868,303.36
  5. Step 5: Solve for x
    x = 113,868,303.36/16,956.80
  6. Step 6: Final answer
    x = 6,715.20

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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.