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Finding the Fourth Proportional to 519,935.20, 779,902.80 and 254,214.70

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Solution

The fourth proportional to 519,935.20, 779,902.80 and 254,214.70 is: 381,322.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,935.20 : 779,902.80 = 254,214.70 : x
  2. Step 2: Convert to fraction form
    519,935.20/779,902.80 = 254,214.70/x
  3. Step 3: Cross multiply
    519,935.20x = 779,902.80 × 254,214.70
  4. Step 4: Simplify right side
    519,935.20x = 198,262,756,331.16
  5. Step 5: Solve for x
    x = 198,262,756,331.16/519,935.20
  6. Step 6: Final answer
    x = 381,322.05

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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.