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Finding the Fourth Proportional to 199,117.60, 298,676.40 and 74,442.40

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Solution

The fourth proportional to 199,117.60, 298,676.40 and 74,442.40 is: 111,663.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,117.60 : 298,676.40 = 74,442.40 : x
  2. Step 2: Convert to fraction form
    199,117.60/298,676.40 = 74,442.40/x
  3. Step 3: Cross multiply
    199,117.60x = 298,676.40 × 74,442.40
  4. Step 4: Simplify right side
    199,117.60x = 22,234,188,039.36
  5. Step 5: Solve for x
    x = 22,234,188,039.36/199,117.60
  6. Step 6: Final answer
    x = 111,663.60

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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.