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Finding the Fourth Proportional to 27,932.61, 41,890.02 and 9,209.15

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Solution

The fourth proportional to 27,932.61, 41,890.02 and 9,209.15 is: 13,810.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,932.61 : 41,890.02 = 9,209.15 : x
  2. Step 2: Convert to fraction form
    27,932.61/41,890.02 = 9,209.15/x
  3. Step 3: Cross multiply
    27,932.61x = 41,890.02 × 9,209.15
  4. Step 4: Simplify right side
    27,932.61x = 385,771,477.68
  5. Step 5: Solve for x
    x = 385,771,477.68/27,932.61
  6. Step 6: Final answer
    x = 13,810.79

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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.