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Finding the Fourth Proportional to 122,927.86, 169,645.68 and 68,479.97

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Solution

The fourth proportional to 122,927.86, 169,645.68 and 68,479.97 is: 94,505.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,927.86 : 169,645.68 = 68,479.97 : x
  2. Step 2: Convert to fraction form
    122,927.86/169,645.68 = 68,479.97/x
  3. Step 3: Cross multiply
    122,927.86x = 169,645.68 × 68,479.97
  4. Step 4: Simplify right side
    122,927.86x = 11,617,329,886.40
  5. Step 5: Solve for x
    x = 11,617,329,886.40/122,927.86
  6. Step 6: Final answer
    x = 94,505.26

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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.