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Finding the Fourth Proportional to 562,029.10, 775,724.71 and 387,843.78

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Solution

The fourth proportional to 562,029.10, 775,724.71 and 387,843.78 is: 535,310.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,029.10 : 775,724.71 = 387,843.78 : x
  2. Step 2: Convert to fraction form
    562,029.10/775,724.71 = 387,843.78/x
  3. Step 3: Cross multiply
    562,029.10x = 775,724.71 × 387,843.78
  4. Step 4: Simplify right side
    562,029.10x = 300,860,002,205.19
  5. Step 5: Solve for x
    x = 300,860,002,205.19/562,029.10
  6. Step 6: Final answer
    x = 535,310.36

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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.