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Finding the Fourth Proportional to 42,974.64, 64,400.76 and 33,571.44

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Solution

The fourth proportional to 42,974.64, 64,400.76 and 33,571.44 is: 50,309.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,974.64 : 64,400.76 = 33,571.44 : x
  2. Step 2: Convert to fraction form
    42,974.64/64,400.76 = 33,571.44/x
  3. Step 3: Cross multiply
    42,974.64x = 64,400.76 × 33,571.44
  4. Step 4: Simplify right side
    42,974.64x = 2,162,026,250.29
  5. Step 5: Solve for x
    x = 2,162,026,250.29/42,974.64
  6. Step 6: Final answer
    x = 50,309.35

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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.