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Finding the Fourth Proportional to 186,790.75, 257,771.30 and 119,722.75

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Solution

The fourth proportional to 186,790.75, 257,771.30 and 119,722.75 is: 165,217.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,790.75 : 257,771.30 = 119,722.75 : x
  2. Step 2: Convert to fraction form
    186,790.75/257,771.30 = 119,722.75/x
  3. Step 3: Cross multiply
    186,790.75x = 257,771.30 × 119,722.75
  4. Step 4: Simplify right side
    186,790.75x = 30,861,088,308.46
  5. Step 5: Solve for x
    x = 30,861,088,308.46/186,790.75
  6. Step 6: Final answer
    x = 165,217.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.