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Finding the Fourth Proportional to 161,857.31, 223,391.95 and 101,479.71

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Solution

The fourth proportional to 161,857.31, 223,391.95 and 101,479.71 is: 140,060.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,857.31 : 223,391.95 = 101,479.71 : x
  2. Step 2: Convert to fraction form
    161,857.31/223,391.95 = 101,479.71/x
  3. Step 3: Cross multiply
    161,857.31x = 223,391.95 × 101,479.71
  4. Step 4: Simplify right side
    161,857.31x = 22,669,750,048.64
  5. Step 5: Solve for x
    x = 22,669,750,048.64/161,857.31
  6. Step 6: Final answer
    x = 140,060.09

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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.