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Finding the Fourth Proportional to 26,700.45, 40,052.97 and 6,978.99

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Solution

The fourth proportional to 26,700.45, 40,052.97 and 6,978.99 is: 10,469.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,700.45 : 40,052.97 = 6,978.99 : x
  2. Step 2: Convert to fraction form
    26,700.45/40,052.97 = 6,978.99/x
  3. Step 3: Cross multiply
    26,700.45x = 40,052.97 × 6,978.99
  4. Step 4: Simplify right side
    26,700.45x = 279,529,277.10
  5. Step 5: Solve for x
    x = 279,529,277.10/26,700.45
  6. Step 6: Final answer
    x = 10,469.08

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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.