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Finding the Fourth Proportional to 64,704.51, 97,050.34 and 20,330.07

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Solution

The fourth proportional to 64,704.51, 97,050.34 and 20,330.07 is: 30,493.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,704.51 : 97,050.34 = 20,330.07 : x
  2. Step 2: Convert to fraction form
    64,704.51/97,050.34 = 20,330.07/x
  3. Step 3: Cross multiply
    64,704.51x = 97,050.34 × 20,330.07
  4. Step 4: Simplify right side
    64,704.51x = 1,973,040,205.72
  5. Step 5: Solve for x
    x = 1,973,040,205.72/64,704.51
  6. Step 6: Final answer
    x = 30,493.09

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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.