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Finding the Fourth Proportional to 124,448.74, 171,738.57 and 67,858.90

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Solution

The fourth proportional to 124,448.74, 171,738.57 and 67,858.90 is: 93,644.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,448.74 : 171,738.57 = 67,858.90 : x
  2. Step 2: Convert to fraction form
    124,448.74/171,738.57 = 67,858.90/x
  3. Step 3: Cross multiply
    124,448.74x = 171,738.57 × 67,858.90
  4. Step 4: Simplify right side
    124,448.74x = 11,653,990,447.77
  5. Step 5: Solve for x
    x = 11,653,990,447.77/124,448.74
  6. Step 6: Final answer
    x = 93,644.91

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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.