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Finding the Fourth Proportional to 64,602.99, 96,896.78 and 17,221.64

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Solution

The fourth proportional to 64,602.99, 96,896.78 and 17,221.64 is: 25,830.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,602.99 : 96,896.78 = 17,221.64 : x
  2. Step 2: Convert to fraction form
    64,602.99/96,896.78 = 17,221.64/x
  3. Step 3: Cross multiply
    64,602.99x = 96,896.78 × 17,221.64
  4. Step 4: Simplify right side
    64,602.99x = 1,668,721,277.27
  5. Step 5: Solve for x
    x = 1,668,721,277.27/64,602.99
  6. Step 6: Final answer
    x = 25,830.40

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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.