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Finding the Fourth Proportional to 645,818.40, 968,727.60 and 410,205.60

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Solution

The fourth proportional to 645,818.40, 968,727.60 and 410,205.60 is: 615,308.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,818.40 : 968,727.60 = 410,205.60 : x
  2. Step 2: Convert to fraction form
    645,818.40/968,727.60 = 410,205.60/x
  3. Step 3: Cross multiply
    645,818.40x = 968,727.60 × 410,205.60
  4. Step 4: Simplify right side
    645,818.40x = 397,377,486,394.56
  5. Step 5: Solve for x
    x = 397,377,486,394.56/645,818.40
  6. Step 6: Final answer
    x = 615,308.40

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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.