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Finding the Fourth Proportional to 18,891.68, 26,070.54 and 10,508

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Solution

The fourth proportional to 18,891.68, 26,070.54 and 10,508 is: 14,501.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.68 : 26,070.54 = 10,508 : x
  2. Step 2: Convert to fraction form
    18,891.68/26,070.54 = 10,508/x
  3. Step 3: Cross multiply
    18,891.68x = 26,070.54 × 10,508
  4. Step 4: Simplify right side
    18,891.68x = 273,949,234.32
  5. Step 5: Solve for x
    x = 273,949,234.32/18,891.68
  6. Step 6: Final answer
    x = 14,501.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.