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Finding the Fourth Proportional to 167,315.82, 230,890.68 and 90,831.30

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Solution

The fourth proportional to 167,315.82, 230,890.68 and 90,831.30 is: 125,344.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,315.82 : 230,890.68 = 90,831.30 : x
  2. Step 2: Convert to fraction form
    167,315.82/230,890.68 = 90,831.30/x
  3. Step 3: Cross multiply
    167,315.82x = 230,890.68 × 90,831.30
  4. Step 4: Simplify right side
    167,315.82x = 20,972,100,622.28
  5. Step 5: Solve for x
    x = 20,972,100,622.28/167,315.82
  6. Step 6: Final answer
    x = 125,344.40

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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.