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Finding the Fourth Proportional to 64,622.63, 96,940.89 and 27,186.51

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Solution

The fourth proportional to 64,622.63, 96,940.89 and 27,186.51 is: 40,782.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,622.63 : 96,940.89 = 27,186.51 : x
  2. Step 2: Convert to fraction form
    64,622.63/96,940.89 = 27,186.51/x
  3. Step 3: Cross multiply
    64,622.63x = 96,940.89 × 27,186.51
  4. Step 4: Simplify right side
    64,622.63x = 2,635,484,475.39
  5. Step 5: Solve for x
    x = 2,635,484,475.39/64,622.63
  6. Step 6: Final answer
    x = 40,782.69

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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.