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Finding the Fourth Proportional to 605,752.20, 908,628.30 and 393,175.80

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Solution

The fourth proportional to 605,752.20, 908,628.30 and 393,175.80 is: 589,763.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,752.20 : 908,628.30 = 393,175.80 : x
  2. Step 2: Convert to fraction form
    605,752.20/908,628.30 = 393,175.80/x
  3. Step 3: Cross multiply
    605,752.20x = 908,628.30 × 393,175.80
  4. Step 4: Simplify right side
    605,752.20x = 357,250,658,755.14
  5. Step 5: Solve for x
    x = 357,250,658,755.14/605,752.20
  6. Step 6: Final answer
    x = 589,763.70

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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.