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Finding the Fourth Proportional to 64,998.66, 89,739.82 and 53,090.58

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Solution

The fourth proportional to 64,998.66, 89,739.82 and 53,090.58 is: 73,299.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,998.66 : 89,739.82 = 53,090.58 : x
  2. Step 2: Convert to fraction form
    64,998.66/89,739.82 = 53,090.58/x
  3. Step 3: Cross multiply
    64,998.66x = 89,739.82 × 53,090.58
  4. Step 4: Simplify right side
    64,998.66x = 4,764,339,092.90
  5. Step 5: Solve for x
    x = 4,764,339,092.90/64,998.66
  6. Step 6: Final answer
    x = 73,299.04

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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.