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Finding the Fourth Proportional to 18,601.65, 27,862.38 and 8,726.13

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Solution

The fourth proportional to 18,601.65, 27,862.38 and 8,726.13 is: 13,070.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,601.65 : 27,862.38 = 8,726.13 : x
  2. Step 2: Convert to fraction form
    18,601.65/27,862.38 = 8,726.13/x
  3. Step 3: Cross multiply
    18,601.65x = 27,862.38 × 8,726.13
  4. Step 4: Simplify right side
    18,601.65x = 243,130,749.99
  5. Step 5: Solve for x
    x = 243,130,749.99/18,601.65
  6. Step 6: Final answer
    x = 13,070.39

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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.