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Finding the Fourth Proportional to 167,409.32, 231,026.54 and 90,929.91

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Solution

The fourth proportional to 167,409.32, 231,026.54 and 90,929.91 is: 125,484.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,409.32 : 231,026.54 = 90,929.91 : x
  2. Step 2: Convert to fraction form
    167,409.32/231,026.54 = 90,929.91/x
  3. Step 3: Cross multiply
    167,409.32x = 231,026.54 × 90,929.91
  4. Step 4: Simplify right side
    167,409.32x = 21,007,221,850.79
  5. Step 5: Solve for x
    x = 21,007,221,850.79/167,409.32
  6. Step 6: Final answer
    x = 125,484.18

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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.