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Finding the Fourth Proportional to 117,586.48, 162,207.15 and 74,489.95

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Solution

The fourth proportional to 117,586.48, 162,207.15 and 74,489.95 is: 102,756.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,586.48 : 162,207.15 = 74,489.95 : x
  2. Step 2: Convert to fraction form
    117,586.48/162,207.15 = 74,489.95/x
  3. Step 3: Cross multiply
    117,586.48x = 162,207.15 × 74,489.95
  4. Step 4: Simplify right side
    117,586.48x = 12,082,802,493.14
  5. Step 5: Solve for x
    x = 12,082,802,493.14/117,586.48
  6. Step 6: Final answer
    x = 102,756.73

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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.