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Finding the Fourth Proportional to 68,857.83, 103,203.65 and 35,559.74

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Solution

The fourth proportional to 68,857.83, 103,203.65 and 35,559.74 is: 53,296.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,857.83 : 103,203.65 = 35,559.74 : x
  2. Step 2: Convert to fraction form
    68,857.83/103,203.65 = 35,559.74/x
  3. Step 3: Cross multiply
    68,857.83x = 103,203.65 × 35,559.74
  4. Step 4: Simplify right side
    68,857.83x = 3,669,895,307.96
  5. Step 5: Solve for x
    x = 3,669,895,307.96/68,857.83
  6. Step 6: Final answer
    x = 53,296.70

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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.