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Finding the Fourth Proportional to 19,863.84, 27,411.02 and 11,366.14

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Solution

The fourth proportional to 19,863.84, 27,411.02 and 11,366.14 is: 15,684.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,863.84 : 27,411.02 = 11,366.14 : x
  2. Step 2: Convert to fraction form
    19,863.84/27,411.02 = 11,366.14/x
  3. Step 3: Cross multiply
    19,863.84x = 27,411.02 × 11,366.14
  4. Step 4: Simplify right side
    19,863.84x = 311,557,490.86
  5. Step 5: Solve for x
    x = 311,557,490.86/19,863.84
  6. Step 6: Final answer
    x = 15,684.66

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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.