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Finding the Fourth Proportional to 40,389.86, 55,736.75 and 22,484.47

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Solution

The fourth proportional to 40,389.86, 55,736.75 and 22,484.47 is: 31,027.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,389.86 : 55,736.75 = 22,484.47 : x
  2. Step 2: Convert to fraction form
    40,389.86/55,736.75 = 22,484.47/x
  3. Step 3: Cross multiply
    40,389.86x = 55,736.75 × 22,484.47
  4. Step 4: Simplify right side
    40,389.86x = 1,253,211,200.14
  5. Step 5: Solve for x
    x = 1,253,211,200.14/40,389.86
  6. Step 6: Final answer
    x = 31,027.87

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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.