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Finding the Fourth Proportional to 685,312.50, 945,600.03 and 443,561.52

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Solution

The fourth proportional to 685,312.50, 945,600.03 and 443,561.52 is: 612,029.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,312.50 : 945,600.03 = 443,561.52 : x
  2. Step 2: Convert to fraction form
    685,312.50/945,600.03 = 443,561.52/x
  3. Step 3: Cross multiply
    685,312.50x = 945,600.03 × 443,561.52
  4. Step 4: Simplify right side
    685,312.50x = 419,431,786,618.85
  5. Step 5: Solve for x
    x = 419,431,786,618.85/685,312.50
  6. Step 6: Final answer
    x = 612,029.97

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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.