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Finding the Fourth Proportional to 543,616.45, 815,064.75 and 259,350.87

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Solution

The fourth proportional to 543,616.45, 815,064.75 and 259,350.87 is: 388,854.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,616.45 : 815,064.75 = 259,350.87 : x
  2. Step 2: Convert to fraction form
    543,616.45/815,064.75 = 259,350.87/x
  3. Step 3: Cross multiply
    543,616.45x = 815,064.75 × 259,350.87
  4. Step 4: Simplify right side
    543,616.45x = 211,387,752,018.83
  5. Step 5: Solve for x
    x = 211,387,752,018.83/543,616.45
  6. Step 6: Final answer
    x = 388,854.59

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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.