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Finding the Fourth Proportional to 123,261.80, 184,838.70 and 56,679.80

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Solution

The fourth proportional to 123,261.80, 184,838.70 and 56,679.80 is: 84,994.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,261.80 : 184,838.70 = 56,679.80 : x
  2. Step 2: Convert to fraction form
    123,261.80/184,838.70 = 56,679.80/x
  3. Step 3: Cross multiply
    123,261.80x = 184,838.70 × 56,679.80
  4. Step 4: Simplify right side
    123,261.80x = 10,476,620,548.26
  5. Step 5: Solve for x
    x = 10,476,620,548.26/123,261.80
  6. Step 6: Final answer
    x = 84,994.87

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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.