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Finding the Fourth Proportional to 193,143.60, 289,715.40 and 189,863.10

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Solution

The fourth proportional to 193,143.60, 289,715.40 and 189,863.10 is: 284,794.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,143.60 : 289,715.40 = 189,863.10 : x
  2. Step 2: Convert to fraction form
    193,143.60/289,715.40 = 189,863.10/x
  3. Step 3: Cross multiply
    193,143.60x = 289,715.40 × 189,863.10
  4. Step 4: Simplify right side
    193,143.60x = 55,006,263,961.74
  5. Step 5: Solve for x
    x = 55,006,263,961.74/193,143.60
  6. Step 6: Final answer
    x = 284,794.65

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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.