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Finding the Fourth Proportional to 122,603.66, 169,174.68 and 68,878.52

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Solution

The fourth proportional to 122,603.66, 169,174.68 and 68,878.52 is: 95,042.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,603.66 : 169,174.68 = 68,878.52 : x
  2. Step 2: Convert to fraction form
    122,603.66/169,174.68 = 68,878.52/x
  3. Step 3: Cross multiply
    122,603.66x = 169,174.68 × 68,878.52
  4. Step 4: Simplify right side
    122,603.66x = 11,652,501,579.87
  5. Step 5: Solve for x
    x = 11,652,501,579.87/122,603.66
  6. Step 6: Final answer
    x = 95,042.04

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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.