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Finding the Fourth Proportional to 193,889.82, 291,107.21 and 99,187.93

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Solution

The fourth proportional to 193,889.82, 291,107.21 and 99,187.93 is: 148,921.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,889.82 : 291,107.21 = 99,187.93 : x
  2. Step 2: Convert to fraction form
    193,889.82/291,107.21 = 99,187.93/x
  3. Step 3: Cross multiply
    193,889.82x = 291,107.21 × 99,187.93
  4. Step 4: Simplify right side
    193,889.82x = 28,874,321,435.92
  5. Step 5: Solve for x
    x = 28,874,321,435.92/193,889.82
  6. Step 6: Final answer
    x = 148,921.29

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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.