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Finding the Fourth Proportional to 205,266.60, 308,216.70 and 111,954.60

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Solution

The fourth proportional to 205,266.60, 308,216.70 and 111,954.60 is: 168,104.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,266.60 : 308,216.70 = 111,954.60 : x
  2. Step 2: Convert to fraction form
    205,266.60/308,216.70 = 111,954.60/x
  3. Step 3: Cross multiply
    205,266.60x = 308,216.70 × 111,954.60
  4. Step 4: Simplify right side
    205,266.60x = 34,506,277,361.82
  5. Step 5: Solve for x
    x = 34,506,277,361.82/205,266.60
  6. Step 6: Final answer
    x = 168,104.69

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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.