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Finding the Fourth Proportional to 168,019.76, 231,866.57 and 91,538.63

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Solution

The fourth proportional to 168,019.76, 231,866.57 and 91,538.63 is: 126,322.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,019.76 : 231,866.57 = 91,538.63 : x
  2. Step 2: Convert to fraction form
    168,019.76/231,866.57 = 91,538.63/x
  3. Step 3: Cross multiply
    168,019.76x = 231,866.57 × 91,538.63
  4. Step 4: Simplify right side
    168,019.76x = 21,224,747,230.11
  5. Step 5: Solve for x
    x = 21,224,747,230.11/168,019.76
  6. Step 6: Final answer
    x = 126,322.92

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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.