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Finding the Fourth Proportional to 99,403.52, 148,964.64 and 55,050.56

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Solution

The fourth proportional to 99,403.52, 148,964.64 and 55,050.56 is: 82,497.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,403.52 : 148,964.64 = 55,050.56 : x
  2. Step 2: Convert to fraction form
    99,403.52/148,964.64 = 55,050.56/x
  3. Step 3: Cross multiply
    99,403.52x = 148,964.64 × 55,050.56
  4. Step 4: Simplify right side
    99,403.52x = 8,200,586,852.20
  5. Step 5: Solve for x
    x = 8,200,586,852.20/99,403.52
  6. Step 6: Final answer
    x = 82,497.95

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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.