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Finding the Fourth Proportional to 533,908.80, 800,863.20 and 515,246.40

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Solution

The fourth proportional to 533,908.80, 800,863.20 and 515,246.40 is: 772,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,908.80 : 800,863.20 = 515,246.40 : x
  2. Step 2: Convert to fraction form
    533,908.80/800,863.20 = 515,246.40/x
  3. Step 3: Cross multiply
    533,908.80x = 800,863.20 × 515,246.40
  4. Step 4: Simplify right side
    533,908.80x = 412,641,880,692.48
  5. Step 5: Solve for x
    x = 412,641,880,692.48/533,908.80
  6. Step 6: Final answer
    x = 772,869.60

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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.