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Finding the Fourth Proportional to 57,754.92, 86,533.80 and 31,412.64

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Solution

The fourth proportional to 57,754.92, 86,533.80 and 31,412.64 is: 47,065.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,754.92 : 86,533.80 = 31,412.64 : x
  2. Step 2: Convert to fraction form
    57,754.92/86,533.80 = 31,412.64/x
  3. Step 3: Cross multiply
    57,754.92x = 86,533.80 × 31,412.64
  4. Step 4: Simplify right side
    57,754.92x = 2,718,255,107.23
  5. Step 5: Solve for x
    x = 2,718,255,107.23/57,754.92
  6. Step 6: Final answer
    x = 47,065.34

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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.