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Finding the Fourth Proportional to 191,605.57, 287,153.68 and 101,629.75

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Solution

The fourth proportional to 191,605.57, 287,153.68 and 101,629.75 is: 152,309.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,605.57 : 287,153.68 = 101,629.75 : x
  2. Step 2: Convert to fraction form
    191,605.57/287,153.68 = 101,629.75/x
  3. Step 3: Cross multiply
    191,605.57x = 287,153.68 × 101,629.75
  4. Step 4: Simplify right side
    191,605.57x = 29,183,356,709.98
  5. Step 5: Solve for x
    x = 29,183,356,709.98/191,605.57
  6. Step 6: Final answer
    x = 152,309.54

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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.