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Finding the Fourth Proportional to 64,894.99, 97,359.78 and 20,522.56

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Solution

The fourth proportional to 64,894.99, 97,359.78 and 20,522.56 is: 30,789.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,894.99 : 97,359.78 = 20,522.56 : x
  2. Step 2: Convert to fraction form
    64,894.99/97,359.78 = 20,522.56/x
  3. Step 3: Cross multiply
    64,894.99x = 97,359.78 × 20,522.56
  4. Step 4: Simplify right side
    64,894.99x = 1,998,071,926.64
  5. Step 5: Solve for x
    x = 1,998,071,926.64/64,894.99
  6. Step 6: Final answer
    x = 30,789.31

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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.