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Finding the Fourth Proportional to 697,781.27, 962,961.41 and 391,911.55

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Solution

The fourth proportional to 697,781.27, 962,961.41 and 391,911.55 is: 540,851.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,781.27 : 962,961.41 = 391,911.55 : x
  2. Step 2: Convert to fraction form
    697,781.27/962,961.41 = 391,911.55/x
  3. Step 3: Cross multiply
    697,781.27x = 962,961.41 × 391,911.55
  4. Step 4: Simplify right side
    697,781.27x = 377,395,697,355.66
  5. Step 5: Solve for x
    x = 377,395,697,355.66/697,781.27
  6. Step 6: Final answer
    x = 540,851.00

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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.