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Finding the Fourth Proportional to 64,629.20, 89,193.48 and 36,333.20

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Solution

The fourth proportional to 64,629.20, 89,193.48 and 36,333.20 is: 50,142.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,629.20 : 89,193.48 = 36,333.20 : x
  2. Step 2: Convert to fraction form
    64,629.20/89,193.48 = 36,333.20/x
  3. Step 3: Cross multiply
    64,629.20x = 89,193.48 × 36,333.20
  4. Step 4: Simplify right side
    64,629.20x = 3,240,684,547.54
  5. Step 5: Solve for x
    x = 3,240,684,547.54/64,629.20
  6. Step 6: Final answer
    x = 50,142.73

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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.