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Finding the Fourth Proportional to 19,888.48, 27,446.76 and 10,936.30

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Solution

The fourth proportional to 19,888.48, 27,446.76 and 10,936.30 is: 15,092.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,888.48 : 27,446.76 = 10,936.30 : x
  2. Step 2: Convert to fraction form
    19,888.48/27,446.76 = 10,936.30/x
  3. Step 3: Cross multiply
    19,888.48x = 27,446.76 × 10,936.30
  4. Step 4: Simplify right side
    19,888.48x = 300,166,001.39
  5. Step 5: Solve for x
    x = 300,166,001.39/19,888.48
  6. Step 6: Final answer
    x = 15,092.46

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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.