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Finding the Fourth Proportional to 64,908.52, 97,380.03 and 20,536.06

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Solution

The fourth proportional to 64,908.52, 97,380.03 and 20,536.06 is: 30,809.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,908.52 : 97,380.03 = 20,536.06 : x
  2. Step 2: Convert to fraction form
    64,908.52/97,380.03 = 20,536.06/x
  3. Step 3: Cross multiply
    64,908.52x = 97,380.03 × 20,536.06
  4. Step 4: Simplify right side
    64,908.52x = 1,999,802,138.88
  5. Step 5: Solve for x
    x = 1,999,802,138.88/64,908.52
  6. Step 6: Final answer
    x = 30,809.55

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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.