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Finding the Fourth Proportional to 84,919.67, 117,200.22 and 54,792.64

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Solution

The fourth proportional to 84,919.67, 117,200.22 and 54,792.64 is: 75,620.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,919.67 : 117,200.22 = 54,792.64 : x
  2. Step 2: Convert to fraction form
    84,919.67/117,200.22 = 54,792.64/x
  3. Step 3: Cross multiply
    84,919.67x = 117,200.22 × 54,792.64
  4. Step 4: Simplify right side
    84,919.67x = 6,421,709,041.13
  5. Step 5: Solve for x
    x = 6,421,709,041.13/84,919.67
  6. Step 6: Final answer
    x = 75,620.98

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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.