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Finding the Fourth Proportional to 191,704.70, 287,885.10 and 185,799.80

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Solution

The fourth proportional to 191,704.70, 287,885.10 and 185,799.80 is: 279,017.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,704.70 : 287,885.10 = 185,799.80 : x
  2. Step 2: Convert to fraction form
    191,704.70/287,885.10 = 185,799.80/x
  3. Step 3: Cross multiply
    191,704.70x = 287,885.10 × 185,799.80
  4. Step 4: Simplify right side
    191,704.70x = 53,488,994,002.98
  5. Step 5: Solve for x
    x = 53,488,994,002.98/191,704.70
  6. Step 6: Final answer
    x = 279,017.65

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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.