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Finding the Fourth Proportional to 193,150.92, 289,655.40 and 66,758.76

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Solution

The fourth proportional to 193,150.92, 289,655.40 and 66,758.76 is: 100,113.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,150.92 : 289,655.40 = 66,758.76 : x
  2. Step 2: Convert to fraction form
    193,150.92/289,655.40 = 66,758.76/x
  3. Step 3: Cross multiply
    193,150.92x = 289,655.40 × 66,758.76
  4. Step 4: Simplify right side
    193,150.92x = 19,337,035,331.30
  5. Step 5: Solve for x
    x = 19,337,035,331.30/193,150.92
  6. Step 6: Final answer
    x = 100,113.61

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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.