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Finding the Fourth Proportional to 122,513.86, 169,069.14 and 68,798.92

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Solution

The fourth proportional to 122,513.86, 169,069.14 and 68,798.92 is: 94,942.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,513.86 : 169,069.14 = 68,798.92 : x
  2. Step 2: Convert to fraction form
    122,513.86/169,069.14 = 68,798.92/x
  3. Step 3: Cross multiply
    122,513.86x = 169,069.14 × 68,798.92
  4. Step 4: Simplify right side
    122,513.86x = 11,631,774,237.33
  5. Step 5: Solve for x
    x = 11,631,774,237.33/122,513.86
  6. Step 6: Final answer
    x = 94,942.52

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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.