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Finding the Fourth Proportional to 618,314.76, 927,560.21 and 191,887.43

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Solution

The fourth proportional to 618,314.76, 927,560.21 and 191,887.43 is: 287,858.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,314.76 : 927,560.21 = 191,887.43 : x
  2. Step 2: Convert to fraction form
    618,314.76/927,560.21 = 191,887.43/x
  3. Step 3: Cross multiply
    618,314.76x = 927,560.21 × 191,887.43
  4. Step 4: Simplify right side
    618,314.76x = 177,987,139,269.92
  5. Step 5: Solve for x
    x = 177,987,139,269.92/618,314.76
  6. Step 6: Final answer
    x = 287,858.47

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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.