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Finding the Fourth Proportional to 71,612.81, 107,317.37 and 52,744.47

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Solution

The fourth proportional to 71,612.81, 107,317.37 and 52,744.47 is: 79,041.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,612.81 : 107,317.37 = 52,744.47 : x
  2. Step 2: Convert to fraction form
    71,612.81/107,317.37 = 52,744.47/x
  3. Step 3: Cross multiply
    71,612.81x = 107,317.37 × 52,744.47
  4. Step 4: Simplify right side
    71,612.81x = 5,660,397,802.44
  5. Step 5: Solve for x
    x = 5,660,397,802.44/71,612.81
  6. Step 6: Final answer
    x = 79,041.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.