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Finding the Fourth Proportional to 117,291.86, 161,863.36 and 113,053.94

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Solution

The fourth proportional to 117,291.86, 161,863.36 and 113,053.94 is: 156,015.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,291.86 : 161,863.36 = 113,053.94 : x
  2. Step 2: Convert to fraction form
    117,291.86/161,863.36 = 113,053.94/x
  3. Step 3: Cross multiply
    117,291.86x = 161,863.36 × 113,053.94
  4. Step 4: Simplify right side
    117,291.86x = 18,299,290,589.64
  5. Step 5: Solve for x
    x = 18,299,290,589.64/117,291.86
  6. Step 6: Final answer
    x = 156,015.01

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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.