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Finding the Fourth Proportional to 167,408.86, 231,025.92 and 90,928.69

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Solution

The fourth proportional to 167,408.86, 231,025.92 and 90,928.69 is: 125,482.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,408.86 : 231,025.92 = 90,928.69 : x
  2. Step 2: Convert to fraction form
    167,408.86/231,025.92 = 90,928.69/x
  3. Step 3: Cross multiply
    167,408.86x = 231,025.92 × 90,928.69
  4. Step 4: Simplify right side
    167,408.86x = 21,006,884,261.64
  5. Step 5: Solve for x
    x = 21,006,884,261.64/167,408.86
  6. Step 6: Final answer
    x = 125,482.51

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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.