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Finding the Fourth Proportional to 84,509.64, 116,629.78 and 48,211.89

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Solution

The fourth proportional to 84,509.64, 116,629.78 and 48,211.89 is: 66,536.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,509.64 : 116,629.78 = 48,211.89 : x
  2. Step 2: Convert to fraction form
    84,509.64/116,629.78 = 48,211.89/x
  3. Step 3: Cross multiply
    84,509.64x = 116,629.78 × 48,211.89
  4. Step 4: Simplify right side
    84,509.64x = 5,622,942,124.08
  5. Step 5: Solve for x
    x = 5,622,942,124.08/84,509.64
  6. Step 6: Final answer
    x = 66,536.10

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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.