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Finding the Fourth Proportional to 15,996.98, 22,075.80 and 8,922.98

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Solution

The fourth proportional to 15,996.98, 22,075.80 and 8,922.98 is: 12,313.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,996.98 : 22,075.80 = 8,922.98 : x
  2. Step 2: Convert to fraction form
    15,996.98/22,075.80 = 8,922.98/x
  3. Step 3: Cross multiply
    15,996.98x = 22,075.80 × 8,922.98
  4. Step 4: Simplify right side
    15,996.98x = 196,981,921.88
  5. Step 5: Solve for x
    x = 196,981,921.88/15,996.98
  6. Step 6: Final answer
    x = 12,313.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.