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Finding the Fourth Proportional to 81,596.96, 112,540.32 and 59,020.64

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Solution

The fourth proportional to 81,596.96, 112,540.32 and 59,020.64 is: 81,402.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,596.96 : 112,540.32 = 59,020.64 : x
  2. Step 2: Convert to fraction form
    81,596.96/112,540.32 = 59,020.64/x
  3. Step 3: Cross multiply
    81,596.96x = 112,540.32 × 59,020.64
  4. Step 4: Simplify right side
    81,596.96x = 6,642,201,712.20
  5. Step 5: Solve for x
    x = 6,642,201,712.20/81,596.96
  6. Step 6: Final answer
    x = 81,402.56

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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.