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Finding the Fourth Proportional to 71,597.13, 98,804.03 and 39,768.99

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Solution

The fourth proportional to 71,597.13, 98,804.03 and 39,768.99 is: 54,881.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,597.13 : 98,804.03 = 39,768.99 : x
  2. Step 2: Convert to fraction form
    71,597.13/98,804.03 = 39,768.99/x
  3. Step 3: Cross multiply
    71,597.13x = 98,804.03 × 39,768.99
  4. Step 4: Simplify right side
    71,597.13x = 3,929,336,481.03
  5. Step 5: Solve for x
    x = 3,929,336,481.03/71,597.13
  6. Step 6: Final answer
    x = 54,881.20

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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.