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Finding the Fourth Proportional to 465,794.80, 698,692.20 and 128,834.80

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Solution

The fourth proportional to 465,794.80, 698,692.20 and 128,834.80 is: 193,252.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,794.80 : 698,692.20 = 128,834.80 : x
  2. Step 2: Convert to fraction form
    465,794.80/698,692.20 = 128,834.80/x
  3. Step 3: Cross multiply
    465,794.80x = 698,692.20 × 128,834.80
  4. Step 4: Simplify right side
    465,794.80x = 90,015,869,848.56
  5. Step 5: Solve for x
    x = 90,015,869,848.56/465,794.80
  6. Step 6: Final answer
    x = 193,252.20

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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.