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Finding the Fourth Proportional to 73,982.40, 110,876.40 and 65,623.20

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Solution

The fourth proportional to 73,982.40, 110,876.40 and 65,623.20 is: 98,348.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,982.40 : 110,876.40 = 65,623.20 : x
  2. Step 2: Convert to fraction form
    73,982.40/110,876.40 = 65,623.20/x
  3. Step 3: Cross multiply
    73,982.40x = 110,876.40 × 65,623.20
  4. Step 4: Simplify right side
    73,982.40x = 7,276,064,172.48
  5. Step 5: Solve for x
    x = 7,276,064,172.48/73,982.40
  6. Step 6: Final answer
    x = 98,348.58

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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.