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Finding the Fourth Proportional to 685,525.32, 945,515.22 and 443,621.28

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Solution

The fourth proportional to 685,525.32, 945,515.22 and 443,621.28 is: 611,867.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,525.32 : 945,515.22 = 443,621.28 : x
  2. Step 2: Convert to fraction form
    685,525.32/945,515.22 = 443,621.28/x
  3. Step 3: Cross multiply
    685,525.32x = 945,515.22 × 443,621.28
  4. Step 4: Simplify right side
    685,525.32x = 419,450,672,155.88
  5. Step 5: Solve for x
    x = 419,450,672,155.88/685,525.32
  6. Step 6: Final answer
    x = 611,867.51

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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.