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Finding the Fourth Proportional to 17,980.40, 26,974.49 and 6,887.09

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Solution

The fourth proportional to 17,980.40, 26,974.49 and 6,887.09 is: 10,332.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,980.40 : 26,974.49 = 6,887.09 : x
  2. Step 2: Convert to fraction form
    17,980.40/26,974.49 = 6,887.09/x
  3. Step 3: Cross multiply
    17,980.40x = 26,974.49 × 6,887.09
  4. Step 4: Simplify right side
    17,980.40x = 185,775,740.33
  5. Step 5: Solve for x
    x = 185,775,740.33/17,980.40
  6. Step 6: Final answer
    x = 10,332.12

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1.5x scale

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.