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Finding the Fourth Proportional to 61,334.58, 84,620.70 and 39,851.22

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Solution

The fourth proportional to 61,334.58, 84,620.70 and 39,851.22 is: 54,981.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,334.58 : 84,620.70 = 39,851.22 : x
  2. Step 2: Convert to fraction form
    61,334.58/84,620.70 = 39,851.22/x
  3. Step 3: Cross multiply
    61,334.58x = 84,620.70 × 39,851.22
  4. Step 4: Simplify right side
    61,334.58x = 3,372,238,132.25
  5. Step 5: Solve for x
    x = 3,372,238,132.25/61,334.58
  6. Step 6: Final answer
    x = 54,981.03

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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.