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Finding the Fourth Proportional to 193,179.15, 289,768.73 and 86,562.90

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Solution

The fourth proportional to 193,179.15, 289,768.73 and 86,562.90 is: 129,844.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,179.15 : 289,768.73 = 86,562.90 : x
  2. Step 2: Convert to fraction form
    193,179.15/289,768.73 = 86,562.90/x
  3. Step 3: Cross multiply
    193,179.15x = 289,768.73 × 86,562.90
  4. Step 4: Simplify right side
    193,179.15x = 25,083,221,165.30
  5. Step 5: Solve for x
    x = 25,083,221,165.30/193,179.15
  6. Step 6: Final answer
    x = 129,844.35

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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.