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Finding the Fourth Proportional to 146,760.60, 220,140.90 and 133,638.60

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Solution

The fourth proportional to 146,760.60, 220,140.90 and 133,638.60 is: 200,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,760.60 : 220,140.90 = 133,638.60 : x
  2. Step 2: Convert to fraction form
    146,760.60/220,140.90 = 133,638.60/x
  3. Step 3: Cross multiply
    146,760.60x = 220,140.90 × 133,638.60
  4. Step 4: Simplify right side
    146,760.60x = 29,419,321,678.74
  5. Step 5: Solve for x
    x = 29,419,321,678.74/146,760.60
  6. Step 6: Final answer
    x = 200,457.90

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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.