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Finding the Fourth Proportional to 245,139.76, 367,369.44 and 111,693.88

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Solution

The fourth proportional to 245,139.76, 367,369.44 and 111,693.88 is: 167,385.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,139.76 : 367,369.44 = 111,693.88 : x
  2. Step 2: Convert to fraction form
    245,139.76/367,369.44 = 111,693.88/x
  3. Step 3: Cross multiply
    245,139.76x = 367,369.44 × 111,693.88
  4. Step 4: Simplify right side
    245,139.76x = 41,032,918,147.03
  5. Step 5: Solve for x
    x = 41,032,918,147.03/245,139.76
  6. Step 6: Final answer
    x = 167,385.81

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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.