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Finding the Fourth Proportional to 79,341.63, 109,490.79 and 43,531.32

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Solution

The fourth proportional to 79,341.63, 109,490.79 and 43,531.32 is: 60,072.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,341.63 : 109,490.79 = 43,531.32 : x
  2. Step 2: Convert to fraction form
    79,341.63/109,490.79 = 43,531.32/x
  3. Step 3: Cross multiply
    79,341.63x = 109,490.79 × 43,531.32
  4. Step 4: Simplify right side
    79,341.63x = 4,766,278,945.51
  5. Step 5: Solve for x
    x = 4,766,278,945.51/79,341.63
  6. Step 6: Final answer
    x = 60,072.87

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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.