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Finding the Fourth Proportional to 117,586.82, 162,270.11 and 63,871.40

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Solution

The fourth proportional to 117,586.82, 162,270.11 and 63,871.40 is: 88,142.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,586.82 : 162,270.11 = 63,871.40 : x
  2. Step 2: Convert to fraction form
    117,586.82/162,270.11 = 63,871.40/x
  3. Step 3: Cross multiply
    117,586.82x = 162,270.11 × 63,871.40
  4. Step 4: Simplify right side
    117,586.82x = 10,364,418,452.18
  5. Step 5: Solve for x
    x = 10,364,418,452.18/117,586.82
  6. Step 6: Final answer
    x = 88,142.69

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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.