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Finding the Fourth Proportional to 191,956.33, 287,934.45 and 103,087.59

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Solution

The fourth proportional to 191,956.33, 287,934.45 and 103,087.59 is: 154,631.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,956.33 : 287,934.45 = 103,087.59 : x
  2. Step 2: Convert to fraction form
    191,956.33/287,934.45 = 103,087.59/x
  3. Step 3: Cross multiply
    191,956.33x = 287,934.45 × 103,087.59
  4. Step 4: Simplify right side
    191,956.33x = 29,682,468,528.48
  5. Step 5: Solve for x
    x = 29,682,468,528.48/191,956.33
  6. Step 6: Final answer
    x = 154,631.36

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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.