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Finding the Fourth Proportional to 436,138.60, 654,207.90 and 404,645.80

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Solution

The fourth proportional to 436,138.60, 654,207.90 and 404,645.80 is: 606,968.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,138.60 : 654,207.90 = 404,645.80 : x
  2. Step 2: Convert to fraction form
    436,138.60/654,207.90 = 404,645.80/x
  3. Step 3: Cross multiply
    436,138.60x = 654,207.90 × 404,645.80
  4. Step 4: Simplify right side
    436,138.60x = 264,722,479,061.82
  5. Step 5: Solve for x
    x = 264,722,479,061.82/436,138.60
  6. Step 6: Final answer
    x = 606,968.70

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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.