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Finding the Fourth Proportional to 64,901.68, 89,564.12 and 36,221.04

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Solution

The fourth proportional to 64,901.68, 89,564.12 and 36,221.04 is: 49,984.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,901.68 : 89,564.12 = 36,221.04 : x
  2. Step 2: Convert to fraction form
    64,901.68/89,564.12 = 36,221.04/x
  3. Step 3: Cross multiply
    64,901.68x = 89,564.12 × 36,221.04
  4. Step 4: Simplify right side
    64,901.68x = 3,244,105,125.26
  5. Step 5: Solve for x
    x = 3,244,105,125.26/64,901.68
  6. Step 6: Final answer
    x = 49,984.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.