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Finding the Fourth Proportional to 68,892,918.19, 103,303,497.72 and 32,491,534.29

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Solution

The fourth proportional to 68,892,918.19, 103,303,497.72 and 32,491,534.29 is: 48,720,379.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,892,918.19 : 103,303,497.72 = 32,491,534.29 : x
  2. Step 2: Convert to fraction form
    68,892,918.19/103,303,497.72 = 32,491,534.29/x
  3. Step 3: Cross multiply
    68,892,918.19x = 103,303,497.72 × 32,491,534.29
  4. Step 4: Simplify right side
    68,892,918.19x = 3,356,489,138,180,771.50
  5. Step 5: Solve for x
    x = 3,356,489,138,180,771.50/68,892,918.19
  6. Step 6: Final answer
    x = 48,720,379.78

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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.