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Finding the Fourth Proportional to 79,505.16, 109,693.16 and 47,662.44

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Solution

The fourth proportional to 79,505.16, 109,693.16 and 47,662.44 is: 65,759.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,505.16 : 109,693.16 = 47,662.44 : x
  2. Step 2: Convert to fraction form
    79,505.16/109,693.16 = 47,662.44/x
  3. Step 3: Cross multiply
    79,505.16x = 109,693.16 × 47,662.44
  4. Step 4: Simplify right side
    79,505.16x = 5,228,243,656.91
  5. Step 5: Solve for x
    x = 5,228,243,656.91/79,505.16
  6. Step 6: Final answer
    x = 65,759.80

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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.