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Finding the Fourth Proportional to 57,158.42, 78,879.92 and 33,276.38

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Solution

The fourth proportional to 57,158.42, 78,879.92 and 33,276.38 is: 45,922.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,158.42 : 78,879.92 = 33,276.38 : x
  2. Step 2: Convert to fraction form
    57,158.42/78,879.92 = 33,276.38/x
  3. Step 3: Cross multiply
    57,158.42x = 78,879.92 × 33,276.38
  4. Step 4: Simplify right side
    57,158.42x = 2,624,837,631.51
  5. Step 5: Solve for x
    x = 2,624,837,631.51/57,158.42
  6. Step 6: Final answer
    x = 45,922.16

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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.