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Finding the Fourth Proportional to 685,390.26, 945,838.44 and 383,584.26

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Solution

The fourth proportional to 685,390.26, 945,838.44 and 383,584.26 is: 529,346.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,390.26 : 945,838.44 = 383,584.26 : x
  2. Step 2: Convert to fraction form
    685,390.26/945,838.44 = 383,584.26/x
  3. Step 3: Cross multiply
    685,390.26x = 945,838.44 × 383,584.26
  4. Step 4: Simplify right side
    685,390.26x = 362,808,738,086.95
  5. Step 5: Solve for x
    x = 362,808,738,086.95/685,390.26
  6. Step 6: Final answer
    x = 529,346.21

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Double scale
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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.