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Finding the Fourth Proportional to 123,181.16, 169,989.44 and 66,592.53

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Solution

The fourth proportional to 123,181.16, 169,989.44 and 66,592.53 is: 91,897.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,181.16 : 169,989.44 = 66,592.53 : x
  2. Step 2: Convert to fraction form
    123,181.16/169,989.44 = 66,592.53/x
  3. Step 3: Cross multiply
    123,181.16x = 169,989.44 × 66,592.53
  4. Step 4: Simplify right side
    123,181.16x = 11,320,026,549.92
  5. Step 5: Solve for x
    x = 11,320,026,549.92/123,181.16
  6. Step 6: Final answer
    x = 91,897.39

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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.