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Finding the Fourth Proportional to 19,888.76, 27,446.59 and 10,936.84

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Solution

The fourth proportional to 19,888.76, 27,446.59 and 10,936.84 is: 15,092.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,888.76 : 27,446.59 = 10,936.84 : x
  2. Step 2: Convert to fraction form
    19,888.76/27,446.59 = 10,936.84/x
  3. Step 3: Cross multiply
    19,888.76x = 27,446.59 × 10,936.84
  4. Step 4: Simplify right side
    19,888.76x = 300,178,963.38
  5. Step 5: Solve for x
    x = 300,178,963.38/19,888.76
  6. Step 6: Final answer
    x = 15,092.89

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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.