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Finding the Fourth Proportional to 681,167.88, 940,011.68 and 379,361.88

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Solution

The fourth proportional to 681,167.88, 940,011.68 and 379,361.88 is: 523,519.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,167.88 : 940,011.68 = 379,361.88 : x
  2. Step 2: Convert to fraction form
    681,167.88/940,011.68 = 379,361.88/x
  3. Step 3: Cross multiply
    681,167.88x = 940,011.68 × 379,361.88
  4. Step 4: Simplify right side
    681,167.88x = 356,604,598,146.76
  5. Step 5: Solve for x
    x = 356,604,598,146.76/681,167.88
  6. Step 6: Final answer
    x = 523,519.40

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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.