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Finding the Fourth Proportional to 438,919.50, 605,708.91 and 237,715.50

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Solution

The fourth proportional to 438,919.50, 605,708.91 and 237,715.50 is: 328,047.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,919.50 : 605,708.91 = 237,715.50 : x
  2. Step 2: Convert to fraction form
    438,919.50/605,708.91 = 237,715.50/x
  3. Step 3: Cross multiply
    438,919.50x = 605,708.91 × 237,715.50
  4. Step 4: Simplify right side
    438,919.50x = 143,986,396,395.11
  5. Step 5: Solve for x
    x = 143,986,396,395.11/438,919.50
  6. Step 6: Final answer
    x = 328,047.39

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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.