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Finding the Fourth Proportional to 99,715.56, 149,601.60 and 40,593.64

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Solution

The fourth proportional to 99,715.56, 149,601.60 and 40,593.64 is: 60,901.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,715.56 : 149,601.60 = 40,593.64 : x
  2. Step 2: Convert to fraction form
    99,715.56/149,601.60 = 40,593.64/x
  3. Step 3: Cross multiply
    99,715.56x = 149,601.60 × 40,593.64
  4. Step 4: Simplify right side
    99,715.56x = 6,072,873,493.82
  5. Step 5: Solve for x
    x = 6,072,873,493.82/99,715.56
  6. Step 6: Final answer
    x = 60,901.96

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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.