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Finding the Fourth Proportional to 70,651.64, 105,977.19 and 18,061.04

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Solution

The fourth proportional to 70,651.64, 105,977.19 and 18,061.04 is: 27,091.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,651.64 : 105,977.19 = 18,061.04 : x
  2. Step 2: Convert to fraction form
    70,651.64/105,977.19 = 18,061.04/x
  3. Step 3: Cross multiply
    70,651.64x = 105,977.19 × 18,061.04
  4. Step 4: Simplify right side
    70,651.64x = 1,914,058,267.68
  5. Step 5: Solve for x
    x = 1,914,058,267.68/70,651.64
  6. Step 6: Final answer
    x = 27,091.49

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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.