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Finding the Fourth Proportional to 516,230.70, 774,346.05 and 404,256.30

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Solution

The fourth proportional to 516,230.70, 774,346.05 and 404,256.30 is: 606,384.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,230.70 : 774,346.05 = 404,256.30 : x
  2. Step 2: Convert to fraction form
    516,230.70/774,346.05 = 404,256.30/x
  3. Step 3: Cross multiply
    516,230.70x = 774,346.05 × 404,256.30
  4. Step 4: Simplify right side
    516,230.70x = 313,034,269,092.62
  5. Step 5: Solve for x
    x = 313,034,269,092.62/516,230.70
  6. Step 6: Final answer
    x = 606,384.45

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Double scale
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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.