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Finding the Fourth Proportional to 18,320.65, 27,481.19 and 5,840.58

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Solution

The fourth proportional to 18,320.65, 27,481.19 and 5,840.58 is: 8,760.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,320.65 : 27,481.19 = 5,840.58 : x
  2. Step 2: Convert to fraction form
    18,320.65/27,481.19 = 5,840.58/x
  3. Step 3: Cross multiply
    18,320.65x = 27,481.19 × 5,840.58
  4. Step 4: Simplify right side
    18,320.65x = 160,506,088.69
  5. Step 5: Solve for x
    x = 160,506,088.69/18,320.65
  6. Step 6: Final answer
    x = 8,760.94

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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.