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Finding the Fourth Proportional to 61,739.25, 85,201.86 and 34,881.20

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Solution

The fourth proportional to 61,739.25, 85,201.86 and 34,881.20 is: 48,137.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,739.25 : 85,201.86 = 34,881.20 : x
  2. Step 2: Convert to fraction form
    61,739.25/85,201.86 = 34,881.20/x
  3. Step 3: Cross multiply
    61,739.25x = 85,201.86 × 34,881.20
  4. Step 4: Simplify right side
    61,739.25x = 2,971,942,693.02
  5. Step 5: Solve for x
    x = 2,971,942,693.02/61,739.25
  6. Step 6: Final answer
    x = 48,137.01

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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.