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Finding the Fourth Proportional to 381,994.48, 573,053.84 and 115,692.60

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Solution

The fourth proportional to 381,994.48, 573,053.84 and 115,692.60 is: 173,557.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,994.48 : 573,053.84 = 115,692.60 : x
  2. Step 2: Convert to fraction form
    381,994.48/573,053.84 = 115,692.60/x
  3. Step 3: Cross multiply
    381,994.48x = 573,053.84 × 115,692.60
  4. Step 4: Simplify right side
    381,994.48x = 66,298,090,693.92
  5. Step 5: Solve for x
    x = 66,298,090,693.92/381,994.48
  6. Step 6: Final answer
    x = 173,557.72

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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.