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Finding the Fourth Proportional to 13,042.62, 17,993.91 and 9,647.76

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Solution

The fourth proportional to 13,042.62, 17,993.91 and 9,647.76 is: 13,310.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,042.62 : 17,993.91 = 9,647.76 : x
  2. Step 2: Convert to fraction form
    13,042.62/17,993.91 = 9,647.76/x
  3. Step 3: Cross multiply
    13,042.62x = 17,993.91 × 9,647.76
  4. Step 4: Simplify right side
    13,042.62x = 173,600,925.14
  5. Step 5: Solve for x
    x = 173,600,925.14/13,042.62
  6. Step 6: Final answer
    x = 13,310.28

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1.5x scale

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.