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Finding the Fourth Proportional to 144,991.20, 217,486.80 and 134,493.60

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Solution

The fourth proportional to 144,991.20, 217,486.80 and 134,493.60 is: 201,740.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,991.20 : 217,486.80 = 134,493.60 : x
  2. Step 2: Convert to fraction form
    144,991.20/217,486.80 = 134,493.60/x
  3. Step 3: Cross multiply
    144,991.20x = 217,486.80 × 134,493.60
  4. Step 4: Simplify right side
    144,991.20x = 29,250,582,684.48
  5. Step 5: Solve for x
    x = 29,250,582,684.48/144,991.20
  6. Step 6: Final answer
    x = 201,740.40

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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.