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Finding the Fourth Proportional to 191,351.85, 287,032.50 and 91,522.59

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Solution

The fourth proportional to 191,351.85, 287,032.50 and 91,522.59 is: 137,286.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,351.85 : 287,032.50 = 91,522.59 : x
  2. Step 2: Convert to fraction form
    191,351.85/287,032.50 = 91,522.59/x
  3. Step 3: Cross multiply
    191,351.85x = 287,032.50 × 91,522.59
  4. Step 4: Simplify right side
    191,351.85x = 26,269,957,814.18
  5. Step 5: Solve for x
    x = 26,269,957,814.18/191,351.85
  6. Step 6: Final answer
    x = 137,286.14

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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.