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Finding the Fourth Proportional to 126,199.78, 189,141.80 and 63,037.53

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Solution

The fourth proportional to 126,199.78, 189,141.80 and 63,037.53 is: 94,477.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,199.78 : 189,141.80 = 63,037.53 : x
  2. Step 2: Convert to fraction form
    126,199.78/189,141.80 = 63,037.53/x
  3. Step 3: Cross multiply
    126,199.78x = 189,141.80 × 63,037.53
  4. Step 4: Simplify right side
    126,199.78x = 11,923,031,576.57
  5. Step 5: Solve for x
    x = 11,923,031,576.57/126,199.78
  6. Step 6: Final answer
    x = 94,477.44

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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.