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Finding the Fourth Proportional to 19,998.84, 27,601.80 and 19,113.16

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Solution

The fourth proportional to 19,998.84, 27,601.80 and 19,113.16 is: 26,379.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,998.84 : 27,601.80 = 19,113.16 : x
  2. Step 2: Convert to fraction form
    19,998.84/27,601.80 = 19,113.16/x
  3. Step 3: Cross multiply
    19,998.84x = 27,601.80 × 19,113.16
  4. Step 4: Simplify right side
    19,998.84x = 527,557,619.69
  5. Step 5: Solve for x
    x = 527,557,619.69/19,998.84
  6. Step 6: Final answer
    x = 26,379.41

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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.