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Finding the Fourth Proportional to 21,692.01, 29,934.72 and 12,262.26

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Solution

The fourth proportional to 21,692.01, 29,934.72 and 12,262.26 is: 16,921.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,692.01 : 29,934.72 = 12,262.26 : x
  2. Step 2: Convert to fraction form
    21,692.01/29,934.72 = 12,262.26/x
  3. Step 3: Cross multiply
    21,692.01x = 29,934.72 × 12,262.26
  4. Step 4: Simplify right side
    21,692.01x = 367,067,319.67
  5. Step 5: Solve for x
    x = 367,067,319.67/21,692.01
  6. Step 6: Final answer
    x = 16,921.78

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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.