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Finding the Fourth Proportional to 101,420.91, 152,167.41 and 45,255.92

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Solution

The fourth proportional to 101,420.91, 152,167.41 and 45,255.92 is: 67,899.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,420.91 : 152,167.41 = 45,255.92 : x
  2. Step 2: Convert to fraction form
    101,420.91/152,167.41 = 45,255.92/x
  3. Step 3: Cross multiply
    101,420.91x = 152,167.41 × 45,255.92
  4. Step 4: Simplify right side
    101,420.91x = 6,886,475,372.73
  5. Step 5: Solve for x
    x = 6,886,475,372.73/101,420.91
  6. Step 6: Final answer
    x = 67,899.96

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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.