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Finding the Fourth Proportional to 220,157.80, 329,361.90 and 190,900.60

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Solution

The fourth proportional to 220,157.80, 329,361.90 and 190,900.60 is: 285,592.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,157.80 : 329,361.90 = 190,900.60 : x
  2. Step 2: Convert to fraction form
    220,157.80/329,361.90 = 190,900.60/x
  3. Step 3: Cross multiply
    220,157.80x = 329,361.90 × 190,900.60
  4. Step 4: Simplify right side
    220,157.80x = 62,875,384,327.14
  5. Step 5: Solve for x
    x = 62,875,384,327.14/220,157.80
  6. Step 6: Final answer
    x = 285,592.35

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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.