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Finding the Fourth Proportional to 636,410.39, 954,411.58 and 209,850.40

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Solution

The fourth proportional to 636,410.39, 954,411.58 and 209,850.40 is: 314,708.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,410.39 : 954,411.58 = 209,850.40 : x
  2. Step 2: Convert to fraction form
    636,410.39/954,411.58 = 209,850.40/x
  3. Step 3: Cross multiply
    636,410.39x = 954,411.58 × 209,850.40
  4. Step 4: Simplify right side
    636,410.39x = 200,283,648,504.60
  5. Step 5: Solve for x
    x = 200,283,648,504.60/636,410.39
  6. Step 6: Final answer
    x = 314,708.32

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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.