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Finding the Fourth Proportional to 64,872.21, 96,663.45 and 57,797.88

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Solution

The fourth proportional to 64,872.21, 96,663.45 and 57,797.88 is: 86,122.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,872.21 : 96,663.45 = 57,797.88 : x
  2. Step 2: Convert to fraction form
    64,872.21/96,663.45 = 57,797.88/x
  3. Step 3: Cross multiply
    64,872.21x = 96,663.45 × 57,797.88
  4. Step 4: Simplify right side
    64,872.21x = 5,586,942,483.49
  5. Step 5: Solve for x
    x = 5,586,942,483.49/64,872.21
  6. Step 6: Final answer
    x = 86,122.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.