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Finding the Fourth Proportional to 88,978.87, 122,790.85 and 48,692.64

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Solution

The fourth proportional to 88,978.87, 122,790.85 and 48,692.64 is: 67,195.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,978.87 : 122,790.85 = 48,692.64 : x
  2. Step 2: Convert to fraction form
    88,978.87/122,790.85 = 48,692.64/x
  3. Step 3: Cross multiply
    88,978.87x = 122,790.85 × 48,692.64
  4. Step 4: Simplify right side
    88,978.87x = 5,979,010,654.34
  5. Step 5: Solve for x
    x = 5,979,010,654.34/88,978.87
  6. Step 6: Final answer
    x = 67,195.85

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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.