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Finding the Fourth Proportional to 653,823.70, 980,735.55 and 543,231.70

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Solution

The fourth proportional to 653,823.70, 980,735.55 and 543,231.70 is: 814,847.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,823.70 : 980,735.55 = 543,231.70 : x
  2. Step 2: Convert to fraction form
    653,823.70/980,735.55 = 543,231.70/x
  3. Step 3: Cross multiply
    653,823.70x = 980,735.55 × 543,231.70
  4. Step 4: Simplify right side
    653,823.70x = 532,766,640,076.94
  5. Step 5: Solve for x
    x = 532,766,640,076.94/653,823.70
  6. Step 6: Final answer
    x = 814,847.55

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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.