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Finding the Fourth Proportional to 86,892.54, 119,882.34 and 55,056.84

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Solution

The fourth proportional to 86,892.54, 119,882.34 and 55,056.84 is: 75,959.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,892.54 : 119,882.34 = 55,056.84 : x
  2. Step 2: Convert to fraction form
    86,892.54/119,882.34 = 55,056.84/x
  3. Step 3: Cross multiply
    86,892.54x = 119,882.34 × 55,056.84
  4. Step 4: Simplify right side
    86,892.54x = 6,600,342,812.21
  5. Step 5: Solve for x
    x = 6,600,342,812.21/86,892.54
  6. Step 6: Final answer
    x = 75,959.83

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1.5x scale

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.