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Finding the Fourth Proportional to 112,996.11, 155,933.22 and 65,248.41

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Solution

The fourth proportional to 112,996.11, 155,933.22 and 65,248.41 is: 90,041.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,996.11 : 155,933.22 = 65,248.41 : x
  2. Step 2: Convert to fraction form
    112,996.11/155,933.22 = 65,248.41/x
  3. Step 3: Cross multiply
    112,996.11x = 155,933.22 × 65,248.41
  4. Step 4: Simplify right side
    112,996.11x = 10,174,394,671.18
  5. Step 5: Solve for x
    x = 10,174,394,671.18/112,996.11
  6. Step 6: Final answer
    x = 90,041.99

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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.