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Finding the Fourth Proportional to 693,630.54, 957,207.38 and 387,706.60

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Solution

The fourth proportional to 693,630.54, 957,207.38 and 387,706.60 is: 535,033.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,630.54 : 957,207.38 = 387,706.60 : x
  2. Step 2: Convert to fraction form
    693,630.54/957,207.38 = 387,706.60/x
  3. Step 3: Cross multiply
    693,630.54x = 957,207.38 × 387,706.60
  4. Step 4: Simplify right side
    693,630.54x = 371,115,618,052.68
  5. Step 5: Solve for x
    x = 371,115,618,052.68/693,630.54
  6. Step 6: Final answer
    x = 535,033.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.