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Finding the Fourth Proportional to 19,667.52, 27,141.20 and 10,715.04

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Solution

The fourth proportional to 19,667.52, 27,141.20 and 10,715.04 is: 14,786.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,667.52 : 27,141.20 = 10,715.04 : x
  2. Step 2: Convert to fraction form
    19,667.52/27,141.20 = 10,715.04/x
  3. Step 3: Cross multiply
    19,667.52x = 27,141.20 × 10,715.04
  4. Step 4: Simplify right side
    19,667.52x = 290,818,990.07
  5. Step 5: Solve for x
    x = 290,818,990.07/19,667.52
  6. Step 6: Final answer
    x = 14,786.76

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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.