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Finding the Fourth Proportional to 58,912.40, 81,280.80 and 33,414.56

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Solution

The fourth proportional to 58,912.40, 81,280.80 and 33,414.56 is: 46,101.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,912.40 : 81,280.80 = 33,414.56 : x
  2. Step 2: Convert to fraction form
    58,912.40/81,280.80 = 33,414.56/x
  3. Step 3: Cross multiply
    58,912.40x = 81,280.80 × 33,414.56
  4. Step 4: Simplify right side
    58,912.40x = 2,715,962,168.45
  5. Step 5: Solve for x
    x = 2,715,962,168.45/58,912.40
  6. Step 6: Final answer
    x = 46,101.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.