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Finding the Fourth Proportional to 167,384.86, 230,989.71 and 90,905.95

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Solution

The fourth proportional to 167,384.86, 230,989.71 and 90,905.95 is: 125,449.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,384.86 : 230,989.71 = 90,905.95 : x
  2. Step 2: Convert to fraction form
    167,384.86/230,989.71 = 90,905.95/x
  3. Step 3: Cross multiply
    167,384.86x = 230,989.71 × 90,905.95
  4. Step 4: Simplify right side
    167,384.86x = 20,998,339,027.77
  5. Step 5: Solve for x
    x = 20,998,339,027.77/167,384.86
  6. Step 6: Final answer
    x = 125,449.45

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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.