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Finding the Fourth Proportional to 103,677.34, 143,143.59 and 79,761.82

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Solution

The fourth proportional to 103,677.34, 143,143.59 and 79,761.82 is: 110,124.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,677.34 : 143,143.59 = 79,761.82 : x
  2. Step 2: Convert to fraction form
    103,677.34/143,143.59 = 79,761.82/x
  3. Step 3: Cross multiply
    103,677.34x = 143,143.59 × 79,761.82
  4. Step 4: Simplify right side
    103,677.34x = 11,417,393,259.73
  5. Step 5: Solve for x
    x = 11,417,393,259.73/103,677.34
  6. Step 6: Final answer
    x = 110,124.29

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