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Finding the Fourth Proportional to 94,917, 142,399.31 and 28,356.87

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Solution

The fourth proportional to 94,917, 142,399.31 and 28,356.87 is: 42,542.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,917 : 142,399.31 = 28,356.87 : x
  2. Step 2: Convert to fraction form
    94,917/142,399.31 = 28,356.87/x
  3. Step 3: Cross multiply
    94,917x = 142,399.31 × 28,356.87
  4. Step 4: Simplify right side
    94,917x = 4,037,998,579.98
  5. Step 5: Solve for x
    x = 4,037,998,579.98/94,917
  6. Step 6: Final answer
    x = 42,542.42

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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.