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Finding the Fourth Proportional to 61,729.80, 85,201.47 and 43,830.42

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Solution

The fourth proportional to 61,729.80, 85,201.47 and 43,830.42 is: 60,496.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,729.80 : 85,201.47 = 43,830.42 : x
  2. Step 2: Convert to fraction form
    61,729.80/85,201.47 = 43,830.42/x
  3. Step 3: Cross multiply
    61,729.80x = 85,201.47 × 43,830.42
  4. Step 4: Simplify right side
    61,729.80x = 3,734,416,214.72
  5. Step 5: Solve for x
    x = 3,734,416,214.72/61,729.80
  6. Step 6: Final answer
    x = 60,496.17

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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.