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Finding the Fourth Proportional to 64,866.81, 89,511.71 and 36,566.49

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Solution

The fourth proportional to 64,866.81, 89,511.71 and 36,566.49 is: 50,459.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,866.81 : 89,511.71 = 36,566.49 : x
  2. Step 2: Convert to fraction form
    64,866.81/89,511.71 = 36,566.49/x
  3. Step 3: Cross multiply
    64,866.81x = 89,511.71 × 36,566.49
  4. Step 4: Simplify right side
    64,866.81x = 3,273,128,865.77
  5. Step 5: Solve for x
    x = 3,273,128,865.77/64,866.81
  6. Step 6: Final answer
    x = 50,459.22

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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.