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Finding the Fourth Proportional to 19,952.80, 27,534.93 and 10,878.11

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Solution

The fourth proportional to 19,952.80, 27,534.93 and 10,878.11 is: 15,011.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,952.80 : 27,534.93 = 10,878.11 : x
  2. Step 2: Convert to fraction form
    19,952.80/27,534.93 = 10,878.11/x
  3. Step 3: Cross multiply
    19,952.80x = 27,534.93 × 10,878.11
  4. Step 4: Simplify right side
    19,952.80x = 299,527,997.38
  5. Step 5: Solve for x
    x = 299,527,997.38/19,952.80
  6. Step 6: Final answer
    x = 15,011.83

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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.