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Finding the Fourth Proportional to 173,930.70, 260,789.42 and 74,034.02

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Solution

The fourth proportional to 173,930.70, 260,789.42 and 74,034.02 is: 111,005.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,930.70 : 260,789.42 = 74,034.02 : x
  2. Step 2: Convert to fraction form
    173,930.70/260,789.42 = 74,034.02/x
  3. Step 3: Cross multiply
    173,930.70x = 260,789.42 × 74,034.02
  4. Step 4: Simplify right side
    173,930.70x = 19,307,289,136.07
  5. Step 5: Solve for x
    x = 19,307,289,136.07/173,930.70
  6. Step 6: Final answer
    x = 111,005.64

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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.