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Finding the Fourth Proportional to 17,886.61, 26,813.48 and 6,191.65

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Solution

The fourth proportional to 17,886.61, 26,813.48 and 6,191.65 is: 9,281.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,886.61 : 26,813.48 = 6,191.65 : x
  2. Step 2: Convert to fraction form
    17,886.61/26,813.48 = 6,191.65/x
  3. Step 3: Cross multiply
    17,886.61x = 26,813.48 × 6,191.65
  4. Step 4: Simplify right side
    17,886.61x = 166,019,631.89
  5. Step 5: Solve for x
    x = 166,019,631.89/17,886.61
  6. Step 6: Final answer
    x = 9,281.78

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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.