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Finding the Fourth Proportional to 17,418.60, 26,117.10 and 10,019.40

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Solution

The fourth proportional to 17,418.60, 26,117.10 and 10,019.40 is: 15,022.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,418.60 : 26,117.10 = 10,019.40 : x
  2. Step 2: Convert to fraction form
    17,418.60/26,117.10 = 10,019.40/x
  3. Step 3: Cross multiply
    17,418.60x = 26,117.10 × 10,019.40
  4. Step 4: Simplify right side
    17,418.60x = 261,677,671.74
  5. Step 5: Solve for x
    x = 261,677,671.74/17,418.60
  6. Step 6: Final answer
    x = 15,022.89

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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.