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Finding the Fourth Proportional to 519,764.20, 779,646.30 and 360,331.90

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Solution

The fourth proportional to 519,764.20, 779,646.30 and 360,331.90 is: 540,497.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,764.20 : 779,646.30 = 360,331.90 : x
  2. Step 2: Convert to fraction form
    519,764.20/779,646.30 = 360,331.90/x
  3. Step 3: Cross multiply
    519,764.20x = 779,646.30 × 360,331.90
  4. Step 4: Simplify right side
    519,764.20x = 280,931,432,606.97
  5. Step 5: Solve for x
    x = 280,931,432,606.97/519,764.20
  6. Step 6: Final answer
    x = 540,497.85

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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.