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Finding the Fourth Proportional to 68,603.24, 102,904.86 and 45,224.21

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Solution

The fourth proportional to 68,603.24, 102,904.86 and 45,224.21 is: 67,836.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,603.24 : 102,904.86 = 45,224.21 : x
  2. Step 2: Convert to fraction form
    68,603.24/102,904.86 = 45,224.21/x
  3. Step 3: Cross multiply
    68,603.24x = 102,904.86 × 45,224.21
  4. Step 4: Simplify right side
    68,603.24x = 4,653,790,998.66
  5. Step 5: Solve for x
    x = 4,653,790,998.66/68,603.24
  6. Step 6: Final answer
    x = 67,836.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.