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Finding the Fourth Proportional to 171,470.36, 236,691.20 and 139,583.88

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Solution

The fourth proportional to 171,470.36, 236,691.20 and 139,583.88 is: 192,676.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,470.36 : 236,691.20 = 139,583.88 : x
  2. Step 2: Convert to fraction form
    171,470.36/236,691.20 = 139,583.88/x
  3. Step 3: Cross multiply
    171,470.36x = 236,691.20 × 139,583.88
  4. Step 4: Simplify right side
    171,470.36x = 33,038,276,057.86
  5. Step 5: Solve for x
    x = 33,038,276,057.86/171,470.36
  6. Step 6: Final answer
    x = 192,676.31

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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.