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Finding the Fourth Proportional to 646,253.58, 969,416.58 and 196,989.12

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Solution

The fourth proportional to 646,253.58, 969,416.58 and 196,989.12 is: 295,494.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,253.58 : 969,416.58 = 196,989.12 : x
  2. Step 2: Convert to fraction form
    646,253.58/969,416.58 = 196,989.12/x
  3. Step 3: Cross multiply
    646,253.58x = 969,416.58 × 196,989.12
  4. Step 4: Simplify right side
    646,253.58x = 190,964,519,007.61
  5. Step 5: Solve for x
    x = 190,964,519,007.61/646,253.58
  6. Step 6: Final answer
    x = 295,494.72

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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.