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Finding the Fourth Proportional to 681,614.70, 940,698.28 and 409,770.60

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Solution

The fourth proportional to 681,614.70, 940,698.28 and 409,770.60 is: 565,525.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,614.70 : 940,698.28 = 409,770.60 : x
  2. Step 2: Convert to fraction form
    681,614.70/940,698.28 = 409,770.60/x
  3. Step 3: Cross multiply
    681,614.70x = 940,698.28 × 409,770.60
  4. Step 4: Simplify right side
    681,614.70x = 385,470,498,614.57
  5. Step 5: Solve for x
    x = 385,470,498,614.57/681,614.70
  6. Step 6: Final answer
    x = 565,525.51

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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.