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Finding the Fourth Proportional to 220,906.80, 331,360.20 and 63,140.40

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Solution

The fourth proportional to 220,906.80, 331,360.20 and 63,140.40 is: 94,710.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,906.80 : 331,360.20 = 63,140.40 : x
  2. Step 2: Convert to fraction form
    220,906.80/331,360.20 = 63,140.40/x
  3. Step 3: Cross multiply
    220,906.80x = 331,360.20 × 63,140.40
  4. Step 4: Simplify right side
    220,906.80x = 20,922,215,572.08
  5. Step 5: Solve for x
    x = 20,922,215,572.08/220,906.80
  6. Step 6: Final answer
    x = 94,710.60

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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.