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Finding the Fourth Proportional to 104,518.01, 144,294.70 and 68,811.82

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Solution

The fourth proportional to 104,518.01, 144,294.70 and 68,811.82 is: 94,999.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,518.01 : 144,294.70 = 68,811.82 : x
  2. Step 2: Convert to fraction form
    104,518.01/144,294.70 = 68,811.82/x
  3. Step 3: Cross multiply
    104,518.01x = 144,294.70 × 68,811.82
  4. Step 4: Simplify right side
    104,518.01x = 9,929,181,215.74
  5. Step 5: Solve for x
    x = 9,929,181,215.74/104,518.01
  6. Step 6: Final answer
    x = 94,999.71

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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.