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Finding the Fourth Proportional to 67,023.91, 91,831.14 and 66,193.80

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Solution

The fourth proportional to 67,023.91, 91,831.14 and 66,193.80 is: 90,693.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,023.91 : 91,831.14 = 66,193.80 : x
  2. Step 2: Convert to fraction form
    67,023.91/91,831.14 = 66,193.80/x
  3. Step 3: Cross multiply
    67,023.91x = 91,831.14 × 66,193.80
  4. Step 4: Simplify right side
    67,023.91x = 6,078,652,114.93
  5. Step 5: Solve for x
    x = 6,078,652,114.93/67,023.91
  6. Step 6: Final answer
    x = 90,693.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.