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Finding the Fourth Proportional to 72,481.34, 108,617.08 and 49,968.91

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Solution

The fourth proportional to 72,481.34, 108,617.08 and 49,968.91 is: 74,881.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,481.34 : 108,617.08 = 49,968.91 : x
  2. Step 2: Convert to fraction form
    72,481.34/108,617.08 = 49,968.91/x
  3. Step 3: Cross multiply
    72,481.34x = 108,617.08 × 49,968.91
  4. Step 4: Simplify right side
    72,481.34x = 5,427,477,094.98
  5. Step 5: Solve for x
    x = 5,427,477,094.98/72,481.34
  6. Step 6: Final answer
    x = 74,881.03

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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.