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Finding the Fourth Proportional to 16,763.76, 25,145.70 and 7,972.08

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Solution

The fourth proportional to 16,763.76, 25,145.70 and 7,972.08 is: 11,958.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,763.76 : 25,145.70 = 7,972.08 : x
  2. Step 2: Convert to fraction form
    16,763.76/25,145.70 = 7,972.08/x
  3. Step 3: Cross multiply
    16,763.76x = 25,145.70 × 7,972.08
  4. Step 4: Simplify right side
    16,763.76x = 200,463,532.06
  5. Step 5: Solve for x
    x = 200,463,532.06/16,763.76
  6. Step 6: Final answer
    x = 11,958.15

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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.