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Finding the Fourth Proportional to 64,996.86, 97,509.87 and 20,625.06

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Solution

The fourth proportional to 64,996.86, 97,509.87 and 20,625.06 is: 30,942.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,996.86 : 97,509.87 = 20,625.06 : x
  2. Step 2: Convert to fraction form
    64,996.86/97,509.87 = 20,625.06/x
  3. Step 3: Cross multiply
    64,996.86x = 97,509.87 × 20,625.06
  4. Step 4: Simplify right side
    64,996.86x = 2,011,146,919.34
  5. Step 5: Solve for x
    x = 2,011,146,919.34/64,996.86
  6. Step 6: Final answer
    x = 30,942.22

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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.