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Finding the Fourth Proportional to 61,128.60, 91,692.90 and 44,288.70

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Solution

The fourth proportional to 61,128.60, 91,692.90 and 44,288.70 is: 66,433.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,128.60 : 91,692.90 = 44,288.70 : x
  2. Step 2: Convert to fraction form
    61,128.60/91,692.90 = 44,288.70/x
  3. Step 3: Cross multiply
    61,128.60x = 91,692.90 × 44,288.70
  4. Step 4: Simplify right side
    61,128.60x = 4,060,959,340.23
  5. Step 5: Solve for x
    x = 4,060,959,340.23/61,128.60
  6. Step 6: Final answer
    x = 66,433.05

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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.