Home / 645,789.72-968,720.97-196,525.20

Finding the Fourth Proportional to 645,789.72, 968,720.97 and 196,525.20

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Solution

The fourth proportional to 645,789.72, 968,720.97 and 196,525.20 is: 294,798.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,789.72 : 968,720.97 = 196,525.20 : x
  2. Step 2: Convert to fraction form
    645,789.72/968,720.97 = 196,525.20/x
  3. Step 3: Cross multiply
    645,789.72x = 968,720.97 × 196,525.20
  4. Step 4: Simplify right side
    645,789.72x = 190,378,082,373.44
  5. Step 5: Solve for x
    x = 190,378,082,373.44/645,789.72
  6. Step 6: Final answer
    x = 294,798.87

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Double scale
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Similar ratio
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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.