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Finding the Fourth Proportional to 79,720, 110,013.60 and 46,205.44

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Solution

The fourth proportional to 79,720, 110,013.60 and 46,205.44 is: 63,763.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,720 : 110,013.60 = 46,205.44 : x
  2. Step 2: Convert to fraction form
    79,720/110,013.60 = 46,205.44/x
  3. Step 3: Cross multiply
    79,720x = 110,013.60 × 46,205.44
  4. Step 4: Simplify right side
    79,720x = 5,083,226,793.98
  5. Step 5: Solve for x
    x = 5,083,226,793.98/79,720
  6. Step 6: Final answer
    x = 63,763.51

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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.