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Finding the Fourth Proportional to 18,871.52, 26,039.84 and 10,374.00

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Solution

The fourth proportional to 18,871.52, 26,039.84 and 10,374.00 is: 14,314.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,871.52 : 26,039.84 = 10,374.00 : x
  2. Step 2: Convert to fraction form
    18,871.52/26,039.84 = 10,374.00/x
  3. Step 3: Cross multiply
    18,871.52x = 26,039.84 × 10,374.00
  4. Step 4: Simplify right side
    18,871.52x = 270,137,296.82
  5. Step 5: Solve for x
    x = 270,137,296.82/18,871.52
  6. Step 6: Final answer
    x = 14,314.55

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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.