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Finding the Fourth Proportional to 64,621.48, 89,177.22 and 36,327.40

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Solution

The fourth proportional to 64,621.48, 89,177.22 and 36,327.40 is: 50,131.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,621.48 : 89,177.22 = 36,327.40 : x
  2. Step 2: Convert to fraction form
    64,621.48/89,177.22 = 36,327.40/x
  3. Step 3: Cross multiply
    64,621.48x = 89,177.22 × 36,327.40
  4. Step 4: Simplify right side
    64,621.48x = 3,239,576,541.83
  5. Step 5: Solve for x
    x = 3,239,576,541.83/64,621.48
  6. Step 6: Final answer
    x = 50,131.57

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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.