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Finding the Fourth Proportional to 13,066.42, 18,031.85 and 7,098.21

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Solution

The fourth proportional to 13,066.42, 18,031.85 and 7,098.21 is: 9,795.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,066.42 : 18,031.85 = 7,098.21 : x
  2. Step 2: Convert to fraction form
    13,066.42/18,031.85 = 7,098.21/x
  3. Step 3: Cross multiply
    13,066.42x = 18,031.85 × 7,098.21
  4. Step 4: Simplify right side
    13,066.42x = 127,993,785.57
  5. Step 5: Solve for x
    x = 127,993,785.57/13,066.42
  6. Step 6: Final answer
    x = 9,795.63

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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.