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Finding the Fourth Proportional to 110,694.80, 152,712.60 and 72,463.70

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Solution

The fourth proportional to 110,694.80, 152,712.60 and 72,463.70 is: 99,969.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,694.80 : 152,712.60 = 72,463.70 : x
  2. Step 2: Convert to fraction form
    110,694.80/152,712.60 = 72,463.70/x
  3. Step 3: Cross multiply
    110,694.80x = 152,712.60 × 72,463.70
  4. Step 4: Simplify right side
    110,694.80x = 11,066,120,032.62
  5. Step 5: Solve for x
    x = 11,066,120,032.62/110,694.80
  6. Step 6: Final answer
    x = 99,969.65

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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.