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Finding the Fourth Proportional to 55,795.72, 83,720.70 and 27,718.60

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Solution

The fourth proportional to 55,795.72, 83,720.70 and 27,718.60 is: 41,591.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,795.72 : 83,720.70 = 27,718.60 : x
  2. Step 2: Convert to fraction form
    55,795.72/83,720.70 = 27,718.60/x
  3. Step 3: Cross multiply
    55,795.72x = 83,720.70 × 27,718.60
  4. Step 4: Simplify right side
    55,795.72x = 2,320,620,595.02
  5. Step 5: Solve for x
    x = 2,320,620,595.02/55,795.72
  6. Step 6: Final answer
    x = 41,591.37

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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.