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Finding the Fourth Proportional to 80,603.76, 120,782.52 and 33,831.12

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Solution

The fourth proportional to 80,603.76, 120,782.52 and 33,831.12 is: 50,695.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,603.76 : 120,782.52 = 33,831.12 : x
  2. Step 2: Convert to fraction form
    80,603.76/120,782.52 = 33,831.12/x
  3. Step 3: Cross multiply
    80,603.76x = 120,782.52 × 33,831.12
  4. Step 4: Simplify right side
    80,603.76x = 4,086,207,928.02
  5. Step 5: Solve for x
    x = 4,086,207,928.02/80,603.76
  6. Step 6: Final answer
    x = 50,695.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.