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Finding the Fourth Proportional to 18,558.65, 27,835.05 and 6,078.71

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Solution

The fourth proportional to 18,558.65, 27,835.05 and 6,078.71 is: 9,117.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,558.65 : 27,835.05 = 6,078.71 : x
  2. Step 2: Convert to fraction form
    18,558.65/27,835.05 = 6,078.71/x
  3. Step 3: Cross multiply
    18,558.65x = 27,835.05 × 6,078.71
  4. Step 4: Simplify right side
    18,558.65x = 169,201,196.79
  5. Step 5: Solve for x
    x = 169,201,196.79/18,558.65
  6. Step 6: Final answer
    x = 9,117.11

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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.