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Finding the Fourth Proportional to 158,953.41, 219,351.29 and 87,333.41

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Solution

The fourth proportional to 158,953.41, 219,351.29 and 87,333.41 is: 120,517.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,953.41 : 219,351.29 = 87,333.41 : x
  2. Step 2: Convert to fraction form
    158,953.41/219,351.29 = 87,333.41/x
  3. Step 3: Cross multiply
    158,953.41x = 219,351.29 × 87,333.41
  4. Step 4: Simplify right side
    158,953.41x = 19,156,694,610.18
  5. Step 5: Solve for x
    x = 19,156,694,610.18/158,953.41
  6. Step 6: Final answer
    x = 120,517.67

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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.