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Finding the Fourth Proportional to 18,466.44, 27,699.66 and 8,612.61

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Solution

The fourth proportional to 18,466.44, 27,699.66 and 8,612.61 is: 12,918.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,466.44 : 27,699.66 = 8,612.61 : x
  2. Step 2: Convert to fraction form
    18,466.44/27,699.66 = 8,612.61/x
  3. Step 3: Cross multiply
    18,466.44x = 27,699.66 × 8,612.61
  4. Step 4: Simplify right side
    18,466.44x = 238,566,368.71
  5. Step 5: Solve for x
    x = 238,566,368.71/18,466.44
  6. Step 6: Final answer
    x = 12,918.92

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Why These Related Problems?

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