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Finding the Fourth Proportional to 122,172.83, 183,146.48 and 84,750.56

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Solution

The fourth proportional to 122,172.83, 183,146.48 and 84,750.56 is: 127,047.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,172.83 : 183,146.48 = 84,750.56 : x
  2. Step 2: Convert to fraction form
    122,172.83/183,146.48 = 84,750.56/x
  3. Step 3: Cross multiply
    122,172.83x = 183,146.48 × 84,750.56
  4. Step 4: Simplify right side
    122,172.83x = 15,521,766,742.03
  5. Step 5: Solve for x
    x = 15,521,766,742.03/122,172.83
  6. Step 6: Final answer
    x = 127,047.62

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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.