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Finding the Fourth Proportional to 384,643.80, 576,965.70 and 171,411.30

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Solution

The fourth proportional to 384,643.80, 576,965.70 and 171,411.30 is: 257,116.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,643.80 : 576,965.70 = 171,411.30 : x
  2. Step 2: Convert to fraction form
    384,643.80/576,965.70 = 171,411.30/x
  3. Step 3: Cross multiply
    384,643.80x = 576,965.70 × 171,411.30
  4. Step 4: Simplify right side
    384,643.80x = 98,898,440,692.41
  5. Step 5: Solve for x
    x = 98,898,440,692.41/384,643.80
  6. Step 6: Final answer
    x = 257,116.95

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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.