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Finding the Fourth Proportional to 9,996.80, 14,995.20 and 2,601.20

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Solution

The fourth proportional to 9,996.80, 14,995.20 and 2,601.20 is: 3,901.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,996.80 : 14,995.20 = 2,601.20 : x
  2. Step 2: Convert to fraction form
    9,996.80/14,995.20 = 2,601.20/x
  3. Step 3: Cross multiply
    9,996.80x = 14,995.20 × 2,601.20
  4. Step 4: Simplify right side
    9,996.80x = 39,005,514.24
  5. Step 5: Solve for x
    x = 39,005,514.24/9,996.80
  6. Step 6: Final answer
    x = 3,901.80

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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.