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Finding the Fourth Proportional to 118,886.43, 178,352.95 and 44,007.21

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Solution

The fourth proportional to 118,886.43, 178,352.95 and 44,007.21 is: 66,019.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,886.43 : 178,352.95 = 44,007.21 : x
  2. Step 2: Convert to fraction form
    118,886.43/178,352.95 = 44,007.21/x
  3. Step 3: Cross multiply
    118,886.43x = 178,352.95 × 44,007.21
  4. Step 4: Simplify right side
    118,886.43x = 7,848,815,724.77
  5. Step 5: Solve for x
    x = 7,848,815,724.77/118,886.43
  6. Step 6: Final answer
    x = 66,019.44

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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.