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Finding the Fourth Proportional to 443,453.80, 665,180.70 and 409,239.40

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Solution

The fourth proportional to 443,453.80, 665,180.70 and 409,239.40 is: 613,859.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,453.80 : 665,180.70 = 409,239.40 : x
  2. Step 2: Convert to fraction form
    443,453.80/665,180.70 = 409,239.40/x
  3. Step 3: Cross multiply
    443,453.80x = 665,180.70 × 409,239.40
  4. Step 4: Simplify right side
    443,453.80x = 272,218,150,559.58
  5. Step 5: Solve for x
    x = 272,218,150,559.58/443,453.80
  6. Step 6: Final answer
    x = 613,859.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.