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Finding the Fourth Proportional to 543,617.07, 815,065.69 and 259,351.49

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Solution

The fourth proportional to 543,617.07, 815,065.69 and 259,351.49 is: 388,855.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,617.07 : 815,065.69 = 259,351.49 : x
  2. Step 2: Convert to fraction form
    543,617.07/815,065.69 = 259,351.49/x
  3. Step 3: Cross multiply
    543,617.07x = 815,065.69 × 259,351.49
  4. Step 4: Simplify right side
    543,617.07x = 211,388,501,149.38
  5. Step 5: Solve for x
    x = 211,388,501,149.38/543,617.07
  6. Step 6: Final answer
    x = 388,855.52

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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.