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Finding the Fourth Proportional to 122,283.60, 183,198.60 and 69,536.40

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Solution

The fourth proportional to 122,283.60, 183,198.60 and 69,536.40 is: 104,175.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,283.60 : 183,198.60 = 69,536.40 : x
  2. Step 2: Convert to fraction form
    122,283.60/183,198.60 = 69,536.40/x
  3. Step 3: Cross multiply
    122,283.60x = 183,198.60 × 69,536.40
  4. Step 4: Simplify right side
    122,283.60x = 12,738,971,129.04
  5. Step 5: Solve for x
    x = 12,738,971,129.04/122,283.60
  6. Step 6: Final answer
    x = 104,175.63

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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.