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Finding the Fourth Proportional to 122,991.75, 169,699.41 and 69,266.07

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Solution

The fourth proportional to 122,991.75, 169,699.41 and 69,266.07 is: 95,570.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,991.75 : 169,699.41 = 69,266.07 : x
  2. Step 2: Convert to fraction form
    122,991.75/169,699.41 = 69,266.07/x
  3. Step 3: Cross multiply
    122,991.75x = 169,699.41 × 69,266.07
  4. Step 4: Simplify right side
    122,991.75x = 11,754,411,212.02
  5. Step 5: Solve for x
    x = 11,754,411,212.02/122,991.75
  6. Step 6: Final answer
    x = 95,570.73

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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.