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Finding the Fourth Proportional to 42,745.88, 64,093.12 and 17,755.76

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Solution

The fourth proportional to 42,745.88, 64,093.12 and 17,755.76 is: 26,622.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,745.88 : 64,093.12 = 17,755.76 : x
  2. Step 2: Convert to fraction form
    42,745.88/64,093.12 = 17,755.76/x
  3. Step 3: Cross multiply
    42,745.88x = 64,093.12 × 17,755.76
  4. Step 4: Simplify right side
    42,745.88x = 1,138,022,056.37
  5. Step 5: Solve for x
    x = 1,138,022,056.37/42,745.88
  6. Step 6: Final answer
    x = 26,622.96

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1.5x scale

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.