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Finding the Fourth Proportional to 116,755.02, 160,994.52 and 78,963.66

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Solution

The fourth proportional to 116,755.02, 160,994.52 and 78,963.66 is: 108,883.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,755.02 : 160,994.52 = 78,963.66 : x
  2. Step 2: Convert to fraction form
    116,755.02/160,994.52 = 78,963.66/x
  3. Step 3: Cross multiply
    116,755.02x = 160,994.52 × 78,963.66
  4. Step 4: Simplify right side
    116,755.02x = 12,712,716,539.14
  5. Step 5: Solve for x
    x = 12,712,716,539.14/116,755.02
  6. Step 6: Final answer
    x = 108,883.68

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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.