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Finding the Fourth Proportional to 248,775.70, 373,163.55 and 91,020.10

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Solution

The fourth proportional to 248,775.70, 373,163.55 and 91,020.10 is: 136,530.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,775.70 : 373,163.55 = 91,020.10 : x
  2. Step 2: Convert to fraction form
    248,775.70/373,163.55 = 91,020.10/x
  3. Step 3: Cross multiply
    248,775.70x = 373,163.55 × 91,020.10
  4. Step 4: Simplify right side
    248,775.70x = 33,965,383,637.36
  5. Step 5: Solve for x
    x = 33,965,383,637.36/248,775.70
  6. Step 6: Final answer
    x = 136,530.15

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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.