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Finding the Fourth Proportional to 454,716.99, 681,887.81 and 155,221.72

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Solution

The fourth proportional to 454,716.99, 681,887.81 and 155,221.72 is: 232,768.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,716.99 : 681,887.81 = 155,221.72 : x
  2. Step 2: Convert to fraction form
    454,716.99/681,887.81 = 155,221.72/x
  3. Step 3: Cross multiply
    454,716.99x = 681,887.81 × 155,221.72
  4. Step 4: Simplify right side
    454,716.99x = 105,843,795,693.85
  5. Step 5: Solve for x
    x = 105,843,795,693.85/454,716.99
  6. Step 6: Final answer
    x = 232,768.51

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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.