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Finding the Fourth Proportional to 640,017.92, 960,026.88 and 196,785.92

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Solution

The fourth proportional to 640,017.92, 960,026.88 and 196,785.92 is: 295,178.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,017.92 : 960,026.88 = 196,785.92 : x
  2. Step 2: Convert to fraction form
    640,017.92/960,026.88 = 196,785.92/x
  3. Step 3: Cross multiply
    640,017.92x = 960,026.88 × 196,785.92
  4. Step 4: Simplify right side
    640,017.92x = 188,919,772,805.53
  5. Step 5: Solve for x
    x = 188,919,772,805.53/640,017.92
  6. Step 6: Final answer
    x = 295,178.88

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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.