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Finding the Fourth Proportional to 577,976.40, 866,965.86 and 311,862.24

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Solution

The fourth proportional to 577,976.40, 866,965.86 and 311,862.24 is: 467,794.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,976.40 : 866,965.86 = 311,862.24 : x
  2. Step 2: Convert to fraction form
    577,976.40/866,965.86 = 311,862.24/x
  3. Step 3: Cross multiply
    577,976.40x = 866,965.86 × 311,862.24
  4. Step 4: Simplify right side
    577,976.40x = 270,373,915,103.13
  5. Step 5: Solve for x
    x = 270,373,915,103.13/577,976.40
  6. Step 6: Final answer
    x = 467,794.04

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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.