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Finding the Fourth Proportional to 235,665.54, 353,452.66 and 91,571.10

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Solution

The fourth proportional to 235,665.54, 353,452.66 and 91,571.10 is: 137,338.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,665.54 : 353,452.66 = 91,571.10 : x
  2. Step 2: Convert to fraction form
    235,665.54/353,452.66 = 91,571.10/x
  3. Step 3: Cross multiply
    235,665.54x = 353,452.66 × 91,571.10
  4. Step 4: Simplify right side
    235,665.54x = 32,366,048,874.13
  5. Step 5: Solve for x
    x = 32,366,048,874.13/235,665.54
  6. Step 6: Final answer
    x = 137,338.91

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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.