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Finding the Fourth Proportional to 73,137.64, 109,700.99 and 26,390.51

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Solution

The fourth proportional to 73,137.64, 109,700.99 and 26,390.51 is: 39,583.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,137.64 : 109,700.99 = 26,390.51 : x
  2. Step 2: Convert to fraction form
    73,137.64/109,700.99 = 26,390.51/x
  3. Step 3: Cross multiply
    73,137.64x = 109,700.99 × 26,390.51
  4. Step 4: Simplify right side
    73,137.64x = 2,895,065,520.56
  5. Step 5: Solve for x
    x = 2,895,065,520.56/73,137.64
  6. Step 6: Final answer
    x = 39,583.80

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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.