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Finding the Fourth Proportional to 438,782.50, 605,519.85 and 237,578.50

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Solution

The fourth proportional to 438,782.50, 605,519.85 and 237,578.50 is: 327,858.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,782.50 : 605,519.85 = 237,578.50 : x
  2. Step 2: Convert to fraction form
    438,782.50/605,519.85 = 237,578.50/x
  3. Step 3: Cross multiply
    438,782.50x = 605,519.85 × 237,578.50
  4. Step 4: Simplify right side
    438,782.50x = 143,858,497,683.23
  5. Step 5: Solve for x
    x = 143,858,497,683.23/438,782.50
  6. Step 6: Final answer
    x = 327,858.33

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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.