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Finding the Fourth Proportional to 104,087.80, 143,602.74 and 68,297.68

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Solution

The fourth proportional to 104,087.80, 143,602.74 and 68,297.68 is: 94,225.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,087.80 : 143,602.74 = 68,297.68 : x
  2. Step 2: Convert to fraction form
    104,087.80/143,602.74 = 68,297.68/x
  3. Step 3: Cross multiply
    104,087.80x = 143,602.74 × 68,297.68
  4. Step 4: Simplify right side
    104,087.80x = 9,807,733,983.64
  5. Step 5: Solve for x
    x = 9,807,733,983.64/104,087.80
  6. Step 6: Final answer
    x = 94,225.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.