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Finding the Fourth Proportional to 220,232.40, 309,025.20 and 220,232.40

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Solution

The fourth proportional to 220,232.40, 309,025.20 and 220,232.40 is: 309,025.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,232.40 : 309,025.20 = 220,232.40 : x
  2. Step 2: Convert to fraction form
    220,232.40/309,025.20 = 220,232.40/x
  3. Step 3: Cross multiply
    220,232.40x = 309,025.20 × 220,232.40
  4. Step 4: Simplify right side
    220,232.40x = 68,057,361,456.48
  5. Step 5: Solve for x
    x = 68,057,361,456.48/220,232.40
  6. Step 6: Final answer
    x = 309,025.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.