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Finding the Fourth Proportional to 674,236.44, 930,474.56 and 387,756.75

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Solution

The fourth proportional to 674,236.44, 930,474.56 and 387,756.75 is: 535,120.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,236.44 : 930,474.56 = 387,756.75 : x
  2. Step 2: Convert to fraction form
    674,236.44/930,474.56 = 387,756.75/x
  3. Step 3: Cross multiply
    674,236.44x = 930,474.56 × 387,756.75
  4. Step 4: Simplify right side
    674,236.44x = 360,797,789,404.50
  5. Step 5: Solve for x
    x = 360,797,789,404.50/674,236.44
  6. Step 6: Final answer
    x = 535,120.57

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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.