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Finding the Fourth Proportional to 104,795.51, 144,297.54 and 78,991.53

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Solution

The fourth proportional to 104,795.51, 144,297.54 and 78,991.53 is: 108,766.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,795.51 : 144,297.54 = 78,991.53 : x
  2. Step 2: Convert to fraction form
    104,795.51/144,297.54 = 78,991.53/x
  3. Step 3: Cross multiply
    104,795.51x = 144,297.54 × 78,991.53
  4. Step 4: Simplify right side
    104,795.51x = 11,398,283,459.84
  5. Step 5: Solve for x
    x = 11,398,283,459.84/104,795.51
  6. Step 6: Final answer
    x = 108,766.91

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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.