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Finding the Fourth Proportional to 57,889.32, 79,890.20 and 34,023.68

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Solution

The fourth proportional to 57,889.32, 79,890.20 and 34,023.68 is: 46,954.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,889.32 : 79,890.20 = 34,023.68 : x
  2. Step 2: Convert to fraction form
    57,889.32/79,890.20 = 34,023.68/x
  3. Step 3: Cross multiply
    57,889.32x = 79,890.20 × 34,023.68
  4. Step 4: Simplify right side
    57,889.32x = 2,718,158,457.54
  5. Step 5: Solve for x
    x = 2,718,158,457.54/57,889.32
  6. Step 6: Final answer
    x = 46,954.41

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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.