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Finding the Fourth Proportional to 439,805.72, 606,933.07 and 238,601.72

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Solution

The fourth proportional to 439,805.72, 606,933.07 and 238,601.72 is: 329,271.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,805.72 : 606,933.07 = 238,601.72 : x
  2. Step 2: Convert to fraction form
    439,805.72/606,933.07 = 238,601.72/x
  3. Step 3: Cross multiply
    439,805.72x = 606,933.07 × 238,601.72
  4. Step 4: Simplify right side
    439,805.72x = 144,815,274,426.88
  5. Step 5: Solve for x
    x = 144,815,274,426.88/439,805.72
  6. Step 6: Final answer
    x = 329,271.01

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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.