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Finding the Fourth Proportional to 20,074.13, 27,703.01 and 12,114.80

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Solution

The fourth proportional to 20,074.13, 27,703.01 and 12,114.80 is: 16,718.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,074.13 : 27,703.01 = 12,114.80 : x
  2. Step 2: Convert to fraction form
    20,074.13/27,703.01 = 12,114.80/x
  3. Step 3: Cross multiply
    20,074.13x = 27,703.01 × 12,114.80
  4. Step 4: Simplify right side
    20,074.13x = 335,616,421.21
  5. Step 5: Solve for x
    x = 335,616,421.21/20,074.13
  6. Step 6: Final answer
    x = 16,718.85

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