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Finding the Fourth Proportional to 483,913.20, 725,869.80 and 406,930.80

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Solution

The fourth proportional to 483,913.20, 725,869.80 and 406,930.80 is: 610,396.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,913.20 : 725,869.80 = 406,930.80 : x
  2. Step 2: Convert to fraction form
    483,913.20/725,869.80 = 406,930.80/x
  3. Step 3: Cross multiply
    483,913.20x = 725,869.80 × 406,930.80
  4. Step 4: Simplify right side
    483,913.20x = 295,378,778,409.84
  5. Step 5: Solve for x
    x = 295,378,778,409.84/483,913.20
  6. Step 6: Final answer
    x = 610,396.20

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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.