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Finding the Fourth Proportional to 578,372.59, 867,261.21 and 338,954.41

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Solution

The fourth proportional to 578,372.59, 867,261.21 and 338,954.41 is: 508,257.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,372.59 : 867,261.21 = 338,954.41 : x
  2. Step 2: Convert to fraction form
    578,372.59/867,261.21 = 338,954.41/x
  3. Step 3: Cross multiply
    578,372.59x = 867,261.21 × 338,954.41
  4. Step 4: Simplify right side
    578,372.59x = 293,962,011,751.44
  5. Step 5: Solve for x
    x = 293,962,011,751.44/578,372.59
  6. Step 6: Final answer
    x = 508,257.16

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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.