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Finding the Fourth Proportional to 118,763.16, 178,161.16 and 39,899.94

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Solution

The fourth proportional to 118,763.16, 178,161.16 and 39,899.94 is: 59,855.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,763.16 : 178,161.16 = 39,899.94 : x
  2. Step 2: Convert to fraction form
    118,763.16/178,161.16 = 39,899.94/x
  3. Step 3: Cross multiply
    118,763.16x = 178,161.16 × 39,899.94
  4. Step 4: Simplify right side
    118,763.16x = 7,108,619,594.33
  5. Step 5: Solve for x
    x = 7,108,619,594.33/118,763.16
  6. Step 6: Final answer
    x = 59,855.43

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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.