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Finding the Fourth Proportional to 17,389.65, 26,081.70 and 5,541.89

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Solution

The fourth proportional to 17,389.65, 26,081.70 and 5,541.89 is: 8,311.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,389.65 : 26,081.70 = 5,541.89 : x
  2. Step 2: Convert to fraction form
    17,389.65/26,081.70 = 5,541.89/x
  3. Step 3: Cross multiply
    17,389.65x = 26,081.70 × 5,541.89
  4. Step 4: Simplify right side
    17,389.65x = 144,541,782.00
  5. Step 5: Solve for x
    x = 144,541,782.00/17,389.65
  6. Step 6: Final answer
    x = 8,311.94

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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.