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Finding the Fourth Proportional to 439,768.66, 606,881.92 and 238,564.66

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Solution

The fourth proportional to 439,768.66, 606,881.92 and 238,564.66 is: 329,219.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,768.66 : 606,881.92 = 238,564.66 : x
  2. Step 2: Convert to fraction form
    439,768.66/606,881.92 = 238,564.66/x
  3. Step 3: Cross multiply
    439,768.66x = 606,881.92 × 238,564.66
  4. Step 4: Simplify right side
    439,768.66x = 144,780,578,904.95
  5. Step 5: Solve for x
    x = 144,780,578,904.95/439,768.66
  6. Step 6: Final answer
    x = 329,219.87

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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.