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Finding the Fourth Proportional to 79,497.15, 109,682.13 and 47,654.43

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Solution

The fourth proportional to 79,497.15, 109,682.13 and 47,654.43 is: 65,748.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,497.15 : 109,682.13 = 47,654.43 : x
  2. Step 2: Convert to fraction form
    79,497.15/109,682.13 = 47,654.43/x
  3. Step 3: Cross multiply
    79,497.15x = 109,682.13 × 47,654.43
  4. Step 4: Simplify right side
    79,497.15x = 5,226,839,386.34
  5. Step 5: Solve for x
    x = 5,226,839,386.34/79,497.15
  6. Step 6: Final answer
    x = 65,748.76

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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.