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Finding the Fourth Proportional to 18,607.65, 27,935.16 and 12,061.23

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Solution

The fourth proportional to 18,607.65, 27,935.16 and 12,061.23 is: 18,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.65 : 27,935.16 = 12,061.23 : x
  2. Step 2: Convert to fraction form
    18,607.65/27,935.16 = 12,061.23/x
  3. Step 3: Cross multiply
    18,607.65x = 27,935.16 × 12,061.23
  4. Step 4: Simplify right side
    18,607.65x = 336,932,389.85
  5. Step 5: Solve for x
    x = 336,932,389.85/18,607.65
  6. Step 6: Final answer
    x = 18,107.20

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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.