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Finding the Fourth Proportional to 123,094.80, 184,642.20 and 87,958.80

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Solution

The fourth proportional to 123,094.80, 184,642.20 and 87,958.80 is: 131,938.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,094.80 : 184,642.20 = 87,958.80 : x
  2. Step 2: Convert to fraction form
    123,094.80/184,642.20 = 87,958.80/x
  3. Step 3: Cross multiply
    123,094.80x = 184,642.20 × 87,958.80
  4. Step 4: Simplify right side
    123,094.80x = 16,240,906,341.36
  5. Step 5: Solve for x
    x = 16,240,906,341.36/123,094.80
  6. Step 6: Final answer
    x = 131,938.20

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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.