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Finding the Fourth Proportional to 528,620.20, 791,310.30 and 291,236.20

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Solution

The fourth proportional to 528,620.20, 791,310.30 and 291,236.20 is: 435,961.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,620.20 : 791,310.30 = 291,236.20 : x
  2. Step 2: Convert to fraction form
    528,620.20/791,310.30 = 291,236.20/x
  3. Step 3: Cross multiply
    528,620.20x = 791,310.30 × 291,236.20
  4. Step 4: Simplify right side
    528,620.20x = 230,458,204,792.86
  5. Step 5: Solve for x
    x = 230,458,204,792.86/528,620.20
  6. Step 6: Final answer
    x = 435,961.78

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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.