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Finding the Fourth Proportional to 99,691.94, 149,494.14 and 37,318.70

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Solution

The fourth proportional to 99,691.94, 149,494.14 and 37,318.70 is: 55,961.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,691.94 : 149,494.14 = 37,318.70 : x
  2. Step 2: Convert to fraction form
    99,691.94/149,494.14 = 37,318.70/x
  3. Step 3: Cross multiply
    99,691.94x = 149,494.14 × 37,318.70
  4. Step 4: Simplify right side
    99,691.94x = 5,578,926,962.42
  5. Step 5: Solve for x
    x = 5,578,926,962.42/99,691.94
  6. Step 6: Final answer
    x = 55,961.67

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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.