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Finding the Fourth Proportional to 17,661.66, 24,347.40 and 12,339.96

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Solution

The fourth proportional to 17,661.66, 24,347.40 and 12,339.96 is: 17,011.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,661.66 : 24,347.40 = 12,339.96 : x
  2. Step 2: Convert to fraction form
    17,661.66/24,347.40 = 12,339.96/x
  3. Step 3: Cross multiply
    17,661.66x = 24,347.40 × 12,339.96
  4. Step 4: Simplify right side
    17,661.66x = 300,445,942.10
  5. Step 5: Solve for x
    x = 300,445,942.10/17,661.66
  6. Step 6: Final answer
    x = 17,011.19

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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.