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Finding the Fourth Proportional to 64,990.89, 97,489.77 and 18,247.41

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Solution

The fourth proportional to 64,990.89, 97,489.77 and 18,247.41 is: 27,372.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,990.89 : 97,489.77 = 18,247.41 : x
  2. Step 2: Convert to fraction form
    64,990.89/97,489.77 = 18,247.41/x
  3. Step 3: Cross multiply
    64,990.89x = 97,489.77 × 18,247.41
  4. Step 4: Simplify right side
    64,990.89x = 1,778,935,804.00
  5. Step 5: Solve for x
    x = 1,778,935,804.00/64,990.89
  6. Step 6: Final answer
    x = 27,372.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.