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Finding the Fourth Proportional to 185,455.80, 278,183.70 and 92,143.80

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Solution

The fourth proportional to 185,455.80, 278,183.70 and 92,143.80 is: 138,215.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,455.80 : 278,183.70 = 92,143.80 : x
  2. Step 2: Convert to fraction form
    185,455.80/278,183.70 = 92,143.80/x
  3. Step 3: Cross multiply
    185,455.80x = 278,183.70 × 92,143.80
  4. Step 4: Simplify right side
    185,455.80x = 25,632,903,216.06
  5. Step 5: Solve for x
    x = 25,632,903,216.06/185,455.80
  6. Step 6: Final answer
    x = 138,215.70

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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.