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Finding the Fourth Proportional to 681,191.60, 940,073.40 and 379,385.60

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Solution

The fourth proportional to 681,191.60, 940,073.40 and 379,385.60 is: 523,568.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,191.60 : 940,073.40 = 379,385.60 : x
  2. Step 2: Convert to fraction form
    681,191.60/940,073.40 = 379,385.60/x
  3. Step 3: Cross multiply
    681,191.60x = 940,073.40 × 379,385.60
  4. Step 4: Simplify right side
    681,191.60x = 356,650,310,903.04
  5. Step 5: Solve for x
    x = 356,650,310,903.04/681,191.60
  6. Step 6: Final answer
    x = 523,568.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.