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Finding the Fourth Proportional to 685,173.33, 945,518.67 and 379,262.25

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Solution

The fourth proportional to 685,173.33, 945,518.67 and 379,262.25 is: 523,370.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,173.33 : 945,518.67 = 379,262.25 : x
  2. Step 2: Convert to fraction form
    685,173.33/945,518.67 = 379,262.25/x
  3. Step 3: Cross multiply
    685,173.33x = 945,518.67 × 379,262.25
  4. Step 4: Simplify right side
    685,173.33x = 358,599,538,201.21
  5. Step 5: Solve for x
    x = 358,599,538,201.21/685,173.33
  6. Step 6: Final answer
    x = 523,370.54

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.