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Finding the Fourth Proportional to 92,617.74, 138,933.15 and 45,858.06

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Solution

The fourth proportional to 92,617.74, 138,933.15 and 45,858.06 is: 68,790.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,617.74 : 138,933.15 = 45,858.06 : x
  2. Step 2: Convert to fraction form
    92,617.74/138,933.15 = 45,858.06/x
  3. Step 3: Cross multiply
    92,617.74x = 138,933.15 × 45,858.06
  4. Step 4: Simplify right side
    92,617.74x = 6,371,204,728.69
  5. Step 5: Solve for x
    x = 6,371,204,728.69/92,617.74
  6. Step 6: Final answer
    x = 68,790.33

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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.