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Finding the Fourth Proportional to 57,795.20, 86,563.20 and 47,427.20

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Solution

The fourth proportional to 57,795.20, 86,563.20 and 47,427.20 is: 71,034.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,795.20 : 86,563.20 = 47,427.20 : x
  2. Step 2: Convert to fraction form
    57,795.20/86,563.20 = 47,427.20/x
  3. Step 3: Cross multiply
    57,795.20x = 86,563.20 × 47,427.20
  4. Step 4: Simplify right side
    57,795.20x = 4,105,450,199.04
  5. Step 5: Solve for x
    x = 4,105,450,199.04/57,795.20
  6. Step 6: Final answer
    x = 71,034.45

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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.