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Finding the Fourth Proportional to 545,686.20, 818,529.30 and 171,660.60

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Solution

The fourth proportional to 545,686.20, 818,529.30 and 171,660.60 is: 257,490.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,686.20 : 818,529.30 = 171,660.60 : x
  2. Step 2: Convert to fraction form
    545,686.20/818,529.30 = 171,660.60/x
  3. Step 3: Cross multiply
    545,686.20x = 818,529.30 × 171,660.60
  4. Step 4: Simplify right side
    545,686.20x = 140,509,230,755.58
  5. Step 5: Solve for x
    x = 140,509,230,755.58/545,686.20
  6. Step 6: Final answer
    x = 257,490.90

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Similar ratio
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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.