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Finding the Fourth Proportional to 85,297.91, 117,710.76 and 47,059.88

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Solution

The fourth proportional to 85,297.91, 117,710.76 and 47,059.88 is: 64,942.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,297.91 : 117,710.76 = 47,059.88 : x
  2. Step 2: Convert to fraction form
    85,297.91/117,710.76 = 47,059.88/x
  3. Step 3: Cross multiply
    85,297.91x = 117,710.76 × 47,059.88
  4. Step 4: Simplify right side
    85,297.91x = 5,539,453,651.76
  5. Step 5: Solve for x
    x = 5,539,453,651.76/85,297.91
  6. Step 6: Final answer
    x = 64,942.44

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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.