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Finding the Fourth Proportional to 64,866.76, 89,516.14 and 36,572.45

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Solution

The fourth proportional to 64,866.76, 89,516.14 and 36,572.45 is: 50,469.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,866.76 : 89,516.14 = 36,572.45 : x
  2. Step 2: Convert to fraction form
    64,866.76/89,516.14 = 36,572.45/x
  3. Step 3: Cross multiply
    64,866.76x = 89,516.14 × 36,572.45
  4. Step 4: Simplify right side
    64,866.76x = 3,273,824,015.33
  5. Step 5: Solve for x
    x = 3,273,824,015.33/64,866.76
  6. Step 6: Final answer
    x = 50,469.98

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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.