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Finding the Fourth Proportional to 516,232.20, 774,348.30 and 404,257.80

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Solution

The fourth proportional to 516,232.20, 774,348.30 and 404,257.80 is: 606,386.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,232.20 : 774,348.30 = 404,257.80 : x
  2. Step 2: Convert to fraction form
    516,232.20/774,348.30 = 404,257.80/x
  3. Step 3: Cross multiply
    516,232.20x = 774,348.30 × 404,257.80
  4. Step 4: Simplify right side
    516,232.20x = 313,036,340,191.74
  5. Step 5: Solve for x
    x = 313,036,340,191.74/516,232.20
  6. Step 6: Final answer
    x = 606,386.70

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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.