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Finding the Fourth Proportional to 64,995.88, 97,505.94 and 20,610.70

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Solution

The fourth proportional to 64,995.88, 97,505.94 and 20,610.70 is: 30,919.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,995.88 : 97,505.94 = 20,610.70 : x
  2. Step 2: Convert to fraction form
    64,995.88/97,505.94 = 20,610.70/x
  3. Step 3: Cross multiply
    64,995.88x = 97,505.94 × 20,610.70
  4. Step 4: Simplify right side
    64,995.88x = 2,009,665,677.56
  5. Step 5: Solve for x
    x = 2,009,665,677.56/64,995.88
  6. Step 6: Final answer
    x = 30,919.89

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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.