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Finding the Fourth Proportional to 670,635.33, 925,008.30 and 455,401.73

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Solution

The fourth proportional to 670,635.33, 925,008.30 and 455,401.73 is: 628,136.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,635.33 : 925,008.30 = 455,401.73 : x
  2. Step 2: Convert to fraction form
    670,635.33/925,008.30 = 455,401.73/x
  3. Step 3: Cross multiply
    670,635.33x = 925,008.30 × 455,401.73
  4. Step 4: Simplify right side
    670,635.33x = 421,250,375,459.32
  5. Step 5: Solve for x
    x = 421,250,375,459.32/670,635.33
  6. Step 6: Final answer
    x = 628,136.27

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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.