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Finding the Fourth Proportional to 159,374.24, 219,918.16 and 91,372.50

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Solution

The fourth proportional to 159,374.24, 219,918.16 and 91,372.50 is: 126,083.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,374.24 : 219,918.16 = 91,372.50 : x
  2. Step 2: Convert to fraction form
    159,374.24/219,918.16 = 91,372.50/x
  3. Step 3: Cross multiply
    159,374.24x = 219,918.16 × 91,372.50
  4. Step 4: Simplify right side
    159,374.24x = 20,094,472,074.60
  5. Step 5: Solve for x
    x = 20,094,472,074.60/159,374.24
  6. Step 6: Final answer
    x = 126,083.56

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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.