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Finding the Fourth Proportional to 158,896.35, 219,278.54 and 86,300.66

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Solution

The fourth proportional to 158,896.35, 219,278.54 and 86,300.66 is: 119,095.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,896.35 : 219,278.54 = 86,300.66 : x
  2. Step 2: Convert to fraction form
    158,896.35/219,278.54 = 86,300.66/x
  3. Step 3: Cross multiply
    158,896.35x = 219,278.54 × 86,300.66
  4. Step 4: Simplify right side
    158,896.35x = 18,923,882,531.88
  5. Step 5: Solve for x
    x = 18,923,882,531.88/158,896.35
  6. Step 6: Final answer
    x = 119,095.77

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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.