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Finding the Fourth Proportional to 19,243.68, 26,558.72 and 10,860

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Solution

The fourth proportional to 19,243.68, 26,558.72 and 10,860 is: 14,988.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,243.68 : 26,558.72 = 10,860 : x
  2. Step 2: Convert to fraction form
    19,243.68/26,558.72 = 10,860/x
  3. Step 3: Cross multiply
    19,243.68x = 26,558.72 × 10,860
  4. Step 4: Simplify right side
    19,243.68x = 288,427,699.20
  5. Step 5: Solve for x
    x = 288,427,699.20/19,243.68
  6. Step 6: Final answer
    x = 14,988.18

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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.