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Finding the Fourth Proportional to 19,900.84, 27,462.42 and 10,947.76

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Solution

The fourth proportional to 19,900.84, 27,462.42 and 10,947.76 is: 15,107.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,900.84 : 27,462.42 = 10,947.76 : x
  2. Step 2: Convert to fraction form
    19,900.84/27,462.42 = 10,947.76/x
  3. Step 3: Cross multiply
    19,900.84x = 27,462.42 × 10,947.76
  4. Step 4: Simplify right side
    19,900.84x = 300,651,983.18
  5. Step 5: Solve for x
    x = 300,651,983.18/19,900.84
  6. Step 6: Final answer
    x = 15,107.50

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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.