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Finding the Fourth Proportional to 68,038,297.20, 102,057,445.80 and 65,203,945.20

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Solution

The fourth proportional to 68,038,297.20, 102,057,445.80 and 65,203,945.20 is: 97,805,917.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,038,297.20 : 102,057,445.80 = 65,203,945.20 : x
  2. Step 2: Convert to fraction form
    68,038,297.20/102,057,445.80 = 65,203,945.20/x
  3. Step 3: Cross multiply
    68,038,297.20x = 102,057,445.80 × 65,203,945.20
  4. Step 4: Simplify right side
    68,038,297.20x = 6,654,548,103,195,170
  5. Step 5: Solve for x
    x = 6,654,548,103,195,170/68,038,297.20
  6. Step 6: Final answer
    x = 97,805,917.80

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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.