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Finding the Fourth Proportional to 439,019, 605,846.40 and 237,815

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Solution

The fourth proportional to 439,019, 605,846.40 and 237,815 is: 328,184.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,019 : 605,846.40 = 237,815 : x
  2. Step 2: Convert to fraction form
    439,019/605,846.40 = 237,815/x
  3. Step 3: Cross multiply
    439,019x = 605,846.40 × 237,815
  4. Step 4: Simplify right side
    439,019x = 144,079,361,616
  5. Step 5: Solve for x
    x = 144,079,361,616/439,019
  6. Step 6: Final answer
    x = 328,184.80

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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.