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Finding the Fourth Proportional to 646,410.11, 969,615.14 and 203,178.11

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Solution

The fourth proportional to 646,410.11, 969,615.14 and 203,178.11 is: 304,767.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,410.11 : 969,615.14 = 203,178.11 : x
  2. Step 2: Convert to fraction form
    646,410.11/969,615.14 = 203,178.11/x
  3. Step 3: Cross multiply
    646,410.11x = 969,615.14 × 203,178.11
  4. Step 4: Simplify right side
    646,410.11x = 197,004,565,708.62
  5. Step 5: Solve for x
    x = 197,004,565,708.62/646,410.11
  6. Step 6: Final answer
    x = 304,767.15

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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.