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Finding the Fourth Proportional to 19,696.71, 27,187.08 and 11,203.41

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Solution

The fourth proportional to 19,696.71, 27,187.08 and 11,203.41 is: 15,463.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,696.71 : 27,187.08 = 11,203.41 : x
  2. Step 2: Convert to fraction form
    19,696.71/27,187.08 = 11,203.41/x
  3. Step 3: Cross multiply
    19,696.71x = 27,187.08 × 11,203.41
  4. Step 4: Simplify right side
    19,696.71x = 304,588,003.94
  5. Step 5: Solve for x
    x = 304,588,003.94/19,696.71
  6. Step 6: Final answer
    x = 15,463.90

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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.