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Finding the Fourth Proportional to 18,561.52, 27,841.02 and 8,703

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Solution

The fourth proportional to 18,561.52, 27,841.02 and 8,703 is: 13,053.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,561.52 : 27,841.02 = 8,703 : x
  2. Step 2: Convert to fraction form
    18,561.52/27,841.02 = 8,703/x
  3. Step 3: Cross multiply
    18,561.52x = 27,841.02 × 8,703
  4. Step 4: Simplify right side
    18,561.52x = 242,300,397.06
  5. Step 5: Solve for x
    x = 242,300,397.06/18,561.52
  6. Step 6: Final answer
    x = 13,053.91

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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.