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Finding the Fourth Proportional to 685,479.53, 945,960.99 and 383,673.53

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Solution

The fourth proportional to 685,479.53, 945,960.99 and 383,673.53 is: 529,469.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,479.53 : 945,960.99 = 383,673.53 : x
  2. Step 2: Convert to fraction form
    685,479.53/945,960.99 = 383,673.53/x
  3. Step 3: Cross multiply
    685,479.53x = 945,960.99 × 383,673.53
  4. Step 4: Simplify right side
    685,479.53x = 362,940,192,275.60
  5. Step 5: Solve for x
    x = 362,940,192,275.60/685,479.53
  6. Step 6: Final answer
    x = 529,469.05

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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.