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Finding the Fourth Proportional to 465,793.80, 698,690.70 and 128,833.80

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Solution

The fourth proportional to 465,793.80, 698,690.70 and 128,833.80 is: 193,250.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,793.80 : 698,690.70 = 128,833.80 : x
  2. Step 2: Convert to fraction form
    465,793.80/698,690.70 = 128,833.80/x
  3. Step 3: Cross multiply
    465,793.80x = 698,690.70 × 128,833.80
  4. Step 4: Simplify right side
    465,793.80x = 90,014,977,905.66
  5. Step 5: Solve for x
    x = 90,014,977,905.66/465,793.80
  6. Step 6: Final answer
    x = 193,250.70

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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.