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Finding the Fourth Proportional to 133,372.74, 184,051.80 and 72,943.20

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Solution

The fourth proportional to 133,372.74, 184,051.80 and 72,943.20 is: 100,660.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,372.74 : 184,051.80 = 72,943.20 : x
  2. Step 2: Convert to fraction form
    133,372.74/184,051.80 = 72,943.20/x
  3. Step 3: Cross multiply
    133,372.74x = 184,051.80 × 72,943.20
  4. Step 4: Simplify right side
    133,372.74x = 13,425,327,257.76
  5. Step 5: Solve for x
    x = 13,425,327,257.76/133,372.74
  6. Step 6: Final answer
    x = 100,660.20

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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.