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Finding the Fourth Proportional to 123,079.20, 184,705.20 and 53,008.80

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Solution

The fourth proportional to 123,079.20, 184,705.20 and 53,008.80 is: 79,550.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,079.20 : 184,705.20 = 53,008.80 : x
  2. Step 2: Convert to fraction form
    123,079.20/184,705.20 = 53,008.80/x
  3. Step 3: Cross multiply
    123,079.20x = 184,705.20 × 53,008.80
  4. Step 4: Simplify right side
    123,079.20x = 9,791,001,005.76
  5. Step 5: Solve for x
    x = 9,791,001,005.76/123,079.20
  6. Step 6: Final answer
    x = 79,550.41

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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.