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Finding the Fourth Proportional to 79,592.29, 109,836.74 and 43,781.51

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Solution

The fourth proportional to 79,592.29, 109,836.74 and 43,781.51 is: 60,418.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,592.29 : 109,836.74 = 43,781.51 : x
  2. Step 2: Convert to fraction form
    79,592.29/109,836.74 = 43,781.51/x
  3. Step 3: Cross multiply
    79,592.29x = 109,836.74 × 43,781.51
  4. Step 4: Simplify right side
    79,592.29x = 4,808,818,714.72
  5. Step 5: Solve for x
    x = 4,808,818,714.72/79,592.29
  6. Step 6: Final answer
    x = 60,418.15

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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.