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Finding the Fourth Proportional to 70,652.62, 105,978.84 and 18,062.11

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Solution

The fourth proportional to 70,652.62, 105,978.84 and 18,062.11 is: 27,093.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,652.62 : 105,978.84 = 18,062.11 : x
  2. Step 2: Convert to fraction form
    70,652.62/105,978.84 = 18,062.11/x
  3. Step 3: Cross multiply
    70,652.62x = 105,978.84 × 18,062.11
  4. Step 4: Simplify right side
    70,652.62x = 1,914,201,465.75
  5. Step 5: Solve for x
    x = 1,914,201,465.75/70,652.62
  6. Step 6: Final answer
    x = 27,093.14

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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.