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Finding the Fourth Proportional to 124,553.25, 171,961.25 and 79,919.01

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Solution

The fourth proportional to 124,553.25, 171,961.25 and 79,919.01 is: 110,338.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,553.25 : 171,961.25 = 79,919.01 : x
  2. Step 2: Convert to fraction form
    124,553.25/171,961.25 = 79,919.01/x
  3. Step 3: Cross multiply
    124,553.25x = 171,961.25 × 79,919.01
  4. Step 4: Simplify right side
    124,553.25x = 13,742,972,458.77
  5. Step 5: Solve for x
    x = 13,742,972,458.77/124,553.25
  6. Step 6: Final answer
    x = 110,338.13

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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.