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Finding the Fourth Proportional to 69,969.88, 96,490.60 and 44,431.20

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Solution

The fourth proportional to 69,969.88, 96,490.60 and 44,431.20 is: 61,271.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,969.88 : 96,490.60 = 44,431.20 : x
  2. Step 2: Convert to fraction form
    69,969.88/96,490.60 = 44,431.20/x
  3. Step 3: Cross multiply
    69,969.88x = 96,490.60 × 44,431.20
  4. Step 4: Simplify right side
    69,969.88x = 4,287,193,146.72
  5. Step 5: Solve for x
    x = 4,287,193,146.72/69,969.88
  6. Step 6: Final answer
    x = 61,271.98

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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.