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Finding the Fourth Proportional to 104,940.71, 157,434.45 and 38,379.36

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Solution

The fourth proportional to 104,940.71, 157,434.45 and 38,379.36 is: 57,577.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,940.71 : 157,434.45 = 38,379.36 : x
  2. Step 2: Convert to fraction form
    104,940.71/157,434.45 = 38,379.36/x
  3. Step 3: Cross multiply
    104,940.71x = 157,434.45 × 38,379.36
  4. Step 4: Simplify right side
    104,940.71x = 6,042,233,432.95
  5. Step 5: Solve for x
    x = 6,042,233,432.95/104,940.71
  6. Step 6: Final answer
    x = 57,577.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.