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Finding the Fourth Proportional to 64,874.43, 89,447.17 and 53,349.07

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Solution

The fourth proportional to 64,874.43, 89,447.17 and 53,349.07 is: 73,556.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,874.43 : 89,447.17 = 53,349.07 : x
  2. Step 2: Convert to fraction form
    64,874.43/89,447.17 = 53,349.07/x
  3. Step 3: Cross multiply
    64,874.43x = 89,447.17 × 53,349.07
  4. Step 4: Simplify right side
    64,874.43x = 4,771,923,333.63
  5. Step 5: Solve for x
    x = 4,771,923,333.63/64,874.43
  6. Step 6: Final answer
    x = 73,556.30

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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.