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Finding the Fourth Proportional to 61,748.13, 85,201.20 and 36,255.60

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Solution

The fourth proportional to 61,748.13, 85,201.20 and 36,255.60 is: 50,026.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,748.13 : 85,201.20 = 36,255.60 : x
  2. Step 2: Convert to fraction form
    61,748.13/85,201.20 = 36,255.60/x
  3. Step 3: Cross multiply
    61,748.13x = 85,201.20 × 36,255.60
  4. Step 4: Simplify right side
    61,748.13x = 3,089,020,626.72
  5. Step 5: Solve for x
    x = 3,089,020,626.72/61,748.13
  6. Step 6: Final answer
    x = 50,026.14

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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.