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Finding the Fourth Proportional to 384,551.84, 530,692.24 and 212,480.90

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Solution

The fourth proportional to 384,551.84, 530,692.24 and 212,480.90 is: 293,229.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,551.84 : 530,692.24 = 212,480.90 : x
  2. Step 2: Convert to fraction form
    384,551.84/530,692.24 = 212,480.90/x
  3. Step 3: Cross multiply
    384,551.84x = 530,692.24 × 212,480.90
  4. Step 4: Simplify right side
    384,551.84x = 112,761,964,778.22
  5. Step 5: Solve for x
    x = 112,761,964,778.22/384,551.84
  6. Step 6: Final answer
    x = 293,229.55

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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.