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Finding the Fourth Proportional to 118,465.44, 163,466.64 and 76,081.44

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Solution

The fourth proportional to 118,465.44, 163,466.64 and 76,081.44 is: 104,982.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,465.44 : 163,466.64 = 76,081.44 : x
  2. Step 2: Convert to fraction form
    118,465.44/163,466.64 = 76,081.44/x
  3. Step 3: Cross multiply
    118,465.44x = 163,466.64 × 76,081.44
  4. Step 4: Simplify right side
    118,465.44x = 12,436,777,363.16
  5. Step 5: Solve for x
    x = 12,436,777,363.16/118,465.44
  6. Step 6: Final answer
    x = 104,982.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.