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Finding the Fourth Proportional to 519,952.20, 779,272.20 and 253,138.20

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Solution

The fourth proportional to 519,952.20, 779,272.20 and 253,138.20 is: 379,387.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,952.20 : 779,272.20 = 253,138.20 : x
  2. Step 2: Convert to fraction form
    519,952.20/779,272.20 = 253,138.20/x
  3. Step 3: Cross multiply
    519,952.20x = 779,272.20 × 253,138.20
  4. Step 4: Simplify right side
    519,952.20x = 197,263,562,018.04
  5. Step 5: Solve for x
    x = 197,263,562,018.04/519,952.20
  6. Step 6: Final answer
    x = 379,387.88

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Half scale
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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.