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Finding the Fourth Proportional to 70,912.74, 97,891.92 and 50,507.94

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Solution

The fourth proportional to 70,912.74, 97,891.92 and 50,507.94 is: 69,723.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,912.74 : 97,891.92 = 50,507.94 : x
  2. Step 2: Convert to fraction form
    70,912.74/97,891.92 = 50,507.94/x
  3. Step 3: Cross multiply
    70,912.74x = 97,891.92 × 50,507.94
  4. Step 4: Simplify right side
    70,912.74x = 4,944,319,221.84
  5. Step 5: Solve for x
    x = 4,944,319,221.84/70,912.74
  6. Step 6: Final answer
    x = 69,723.99

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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.