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Finding the Fourth Proportional to 57,835.20, 86,623.20 and 47,467.20

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Solution

The fourth proportional to 57,835.20, 86,623.20 and 47,467.20 is: 71,094.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,835.20 : 86,623.20 = 47,467.20 : x
  2. Step 2: Convert to fraction form
    57,835.20/86,623.20 = 47,467.20/x
  3. Step 3: Cross multiply
    57,835.20x = 86,623.20 × 47,467.20
  4. Step 4: Simplify right side
    57,835.20x = 4,111,760,759.04
  5. Step 5: Solve for x
    x = 4,111,760,759.04/57,835.20
  6. Step 6: Final answer
    x = 71,094.43

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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.