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Finding the Fourth Proportional to 13,066.67, 18,024.18 and 12,191.87

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Solution

The fourth proportional to 13,066.67, 18,024.18 and 12,191.87 is: 16,817.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,066.67 : 18,024.18 = 12,191.87 : x
  2. Step 2: Convert to fraction form
    13,066.67/18,024.18 = 12,191.87/x
  3. Step 3: Cross multiply
    13,066.67x = 18,024.18 × 12,191.87
  4. Step 4: Simplify right side
    13,066.67x = 219,748,459.42
  5. Step 5: Solve for x
    x = 219,748,459.42/13,066.67
  6. Step 6: Final answer
    x = 16,817.48

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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.