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Finding the Fourth Proportional to 191,628.87, 264,389.31 and 111,040.85

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Solution

The fourth proportional to 191,628.87, 264,389.31 and 111,040.85 is: 153,202.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,628.87 : 264,389.31 = 111,040.85 : x
  2. Step 2: Convert to fraction form
    191,628.87/264,389.31 = 111,040.85/x
  3. Step 3: Cross multiply
    191,628.87x = 264,389.31 × 111,040.85
  4. Step 4: Simplify right side
    191,628.87x = 29,358,012,391.37
  5. Step 5: Solve for x
    x = 29,358,012,391.37/191,628.87
  6. Step 6: Final answer
    x = 153,202.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.