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Finding the Fourth Proportional to 685,821.96, 946,021.86 and 453,250.44

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Solution

The fourth proportional to 685,821.96, 946,021.86 and 453,250.44 is: 625,213.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,821.96 : 946,021.86 = 453,250.44 : x
  2. Step 2: Convert to fraction form
    685,821.96/946,021.86 = 453,250.44/x
  3. Step 3: Cross multiply
    685,821.96x = 946,021.86 × 453,250.44
  4. Step 4: Simplify right side
    685,821.96x = 428,784,824,294.62
  5. Step 5: Solve for x
    x = 428,784,824,294.62/685,821.96
  6. Step 6: Final answer
    x = 625,213.03

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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.