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Finding the Fourth Proportional to 18,884.63, 26,061.08 and 10,387.12

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Solution

The fourth proportional to 18,884.63, 26,061.08 and 10,387.12 is: 14,334.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,884.63 : 26,061.08 = 10,387.12 : x
  2. Step 2: Convert to fraction form
    18,884.63/26,061.08 = 10,387.12/x
  3. Step 3: Cross multiply
    18,884.63x = 26,061.08 × 10,387.12
  4. Step 4: Simplify right side
    18,884.63x = 270,699,565.29
  5. Step 5: Solve for x
    x = 270,699,565.29/18,884.63
  6. Step 6: Final answer
    x = 14,334.39

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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.