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Finding the Fourth Proportional to 12,031.77, 18,019.62 and 11,699.61

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Solution

The fourth proportional to 12,031.77, 18,019.62 and 11,699.61 is: 17,522.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,031.77 : 18,019.62 = 11,699.61 : x
  2. Step 2: Convert to fraction form
    12,031.77/18,019.62 = 11,699.61/x
  3. Step 3: Cross multiply
    12,031.77x = 18,019.62 × 11,699.61
  4. Step 4: Simplify right side
    12,031.77x = 210,822,526.35
  5. Step 5: Solve for x
    x = 210,822,526.35/12,031.77
  6. Step 6: Final answer
    x = 17,522.15

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.