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Finding the Fourth Proportional to 169,607.16, 254,416.14 and 85,321.26

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Solution

The fourth proportional to 169,607.16, 254,416.14 and 85,321.26 is: 127,984.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,607.16 : 254,416.14 = 85,321.26 : x
  2. Step 2: Convert to fraction form
    169,607.16/254,416.14 = 85,321.26/x
  3. Step 3: Cross multiply
    169,607.16x = 254,416.14 × 85,321.26
  4. Step 4: Simplify right side
    169,607.16x = 21,707,105,629.14
  5. Step 5: Solve for x
    x = 21,707,105,629.14/169,607.16
  6. Step 6: Final answer
    x = 127,984.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.