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Finding the Fourth Proportional to 341,656.80, 512,485.20 and 217,240.80

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Solution

The fourth proportional to 341,656.80, 512,485.20 and 217,240.80 is: 325,861.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,656.80 : 512,485.20 = 217,240.80 : x
  2. Step 2: Convert to fraction form
    341,656.80/512,485.20 = 217,240.80/x
  3. Step 3: Cross multiply
    341,656.80x = 512,485.20 × 217,240.80
  4. Step 4: Simplify right side
    341,656.80x = 111,332,694,836.16
  5. Step 5: Solve for x
    x = 111,332,694,836.16/341,656.80
  6. Step 6: Final answer
    x = 325,861.20

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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.