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Finding the Fourth Proportional to 167,451.99, 231,082.79 and 90,970.47

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Solution

The fourth proportional to 167,451.99, 231,082.79 and 90,970.47 is: 125,538.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,451.99 : 231,082.79 = 90,970.47 : x
  2. Step 2: Convert to fraction form
    167,451.99/231,082.79 = 90,970.47/x
  3. Step 3: Cross multiply
    167,451.99x = 231,082.79 × 90,970.47
  4. Step 4: Simplify right side
    167,451.99x = 21,021,709,560.36
  5. Step 5: Solve for x
    x = 21,021,709,560.36/167,451.99
  6. Step 6: Final answer
    x = 125,538.73

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1.5x scale

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.