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Finding the Fourth Proportional to 186,786.72, 257,765.20 and 101,903.72

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Solution

The fourth proportional to 186,786.72, 257,765.20 and 101,903.72 is: 140,626.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,786.72 : 257,765.20 = 101,903.72 : x
  2. Step 2: Convert to fraction form
    186,786.72/257,765.20 = 101,903.72/x
  3. Step 3: Cross multiply
    186,786.72x = 257,765.20 × 101,903.72
  4. Step 4: Simplify right side
    186,786.72x = 26,267,232,766.54
  5. Step 5: Solve for x
    x = 26,267,232,766.54/186,786.72
  6. Step 6: Final answer
    x = 140,626.88

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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.