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Finding the Fourth Proportional to 519,252.20, 778,878.30 and 203,719.40

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Solution

The fourth proportional to 519,252.20, 778,878.30 and 203,719.40 is: 305,579.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,252.20 : 778,878.30 = 203,719.40 : x
  2. Step 2: Convert to fraction form
    519,252.20/778,878.30 = 203,719.40/x
  3. Step 3: Cross multiply
    519,252.20x = 778,878.30 × 203,719.40
  4. Step 4: Simplify right side
    519,252.20x = 158,672,619,949.02
  5. Step 5: Solve for x
    x = 158,672,619,949.02/519,252.20
  6. Step 6: Final answer
    x = 305,579.10

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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.