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Finding the Fourth Proportional to 133,405.14, 184,068.14 and 79,679.46

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Solution

The fourth proportional to 133,405.14, 184,068.14 and 79,679.46 is: 109,939.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,405.14 : 184,068.14 = 79,679.46 : x
  2. Step 2: Convert to fraction form
    133,405.14/184,068.14 = 79,679.46/x
  3. Step 3: Cross multiply
    133,405.14x = 184,068.14 × 79,679.46
  4. Step 4: Simplify right side
    133,405.14x = 14,666,449,600.01
  5. Step 5: Solve for x
    x = 14,666,449,600.01/133,405.14
  6. Step 6: Final answer
    x = 109,939.16

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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.