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Finding the Fourth Proportional to 519,868.67, 779,803.01 and 220,342.55

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Solution

The fourth proportional to 519,868.67, 779,803.01 and 220,342.55 is: 330,513.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,868.67 : 779,803.01 = 220,342.55 : x
  2. Step 2: Convert to fraction form
    519,868.67/779,803.01 = 220,342.55/x
  3. Step 3: Cross multiply
    519,868.67x = 779,803.01 × 220,342.55
  4. Step 4: Simplify right side
    519,868.67x = 171,823,783,721.08
  5. Step 5: Solve for x
    x = 171,823,783,721.08/519,868.67
  6. Step 6: Final answer
    x = 330,513.83

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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.