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Finding the Fourth Proportional to 86,402.88, 119,235.78 and 48,676.86

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Solution

The fourth proportional to 86,402.88, 119,235.78 and 48,676.86 is: 67,173.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,402.88 : 119,235.78 = 48,676.86 : x
  2. Step 2: Convert to fraction form
    86,402.88/119,235.78 = 48,676.86/x
  3. Step 3: Cross multiply
    86,402.88x = 119,235.78 × 48,676.86
  4. Step 4: Simplify right side
    86,402.88x = 5,804,023,370.05
  5. Step 5: Solve for x
    x = 5,804,023,370.05/86,402.88
  6. Step 6: Final answer
    x = 67,173.96

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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.