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Finding the Fourth Proportional to 66,593.91, 99,875.88 and 19,198.79

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Solution

The fourth proportional to 66,593.91, 99,875.88 and 19,198.79 is: 28,793.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,593.91 : 99,875.88 = 19,198.79 : x
  2. Step 2: Convert to fraction form
    66,593.91/99,875.88 = 19,198.79/x
  3. Step 3: Cross multiply
    66,593.91x = 99,875.88 × 19,198.79
  4. Step 4: Simplify right side
    66,593.91x = 1,917,495,546.81
  5. Step 5: Solve for x
    x = 1,917,495,546.81/66,593.91
  6. Step 6: Final answer
    x = 28,793.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.