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Finding the Fourth Proportional to 17,906.58, 26,802.63 and 11,971.98

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Solution

The fourth proportional to 17,906.58, 26,802.63 and 11,971.98 is: 17,919.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,906.58 : 26,802.63 = 11,971.98 : x
  2. Step 2: Convert to fraction form
    17,906.58/26,802.63 = 11,971.98/x
  3. Step 3: Cross multiply
    17,906.58x = 26,802.63 × 11,971.98
  4. Step 4: Simplify right side
    17,906.58x = 320,880,550.31
  5. Step 5: Solve for x
    x = 320,880,550.31/17,906.58
  6. Step 6: Final answer
    x = 17,919.70

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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.