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Finding the Fourth Proportional to 191,804.70, 287,793.45 and 91,926.30

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Solution

The fourth proportional to 191,804.70, 287,793.45 and 91,926.30 is: 137,930.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,804.70 : 287,793.45 = 91,926.30 : x
  2. Step 2: Convert to fraction form
    191,804.70/287,793.45 = 91,926.30/x
  3. Step 3: Cross multiply
    191,804.70x = 287,793.45 × 91,926.30
  4. Step 4: Simplify right side
    191,804.70x = 26,455,787,022.74
  5. Step 5: Solve for x
    x = 26,455,787,022.74/191,804.70
  6. Step 6: Final answer
    x = 137,930.86

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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.