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Finding the Fourth Proportional to 86,056, 118,462.44 and 74,658.52

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Solution

The fourth proportional to 86,056, 118,462.44 and 74,658.52 is: 102,772.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,056 : 118,462.44 = 74,658.52 : x
  2. Step 2: Convert to fraction form
    86,056/118,462.44 = 74,658.52/x
  3. Step 3: Cross multiply
    86,056x = 118,462.44 × 74,658.52
  4. Step 4: Simplify right side
    86,056x = 8,844,230,445.99
  5. Step 5: Solve for x
    x = 8,844,230,445.99/86,056
  6. Step 6: Final answer
    x = 102,772.97

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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.