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Finding the Fourth Proportional to 64,961.18, 89,646.46 and 36,668.70

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Solution

The fourth proportional to 64,961.18, 89,646.46 and 36,668.70 is: 50,602.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,961.18 : 89,646.46 = 36,668.70 : x
  2. Step 2: Convert to fraction form
    64,961.18/89,646.46 = 36,668.70/x
  3. Step 3: Cross multiply
    64,961.18x = 89,646.46 × 36,668.70
  4. Step 4: Simplify right side
    64,961.18x = 3,287,219,147.80
  5. Step 5: Solve for x
    x = 3,287,219,147.80/64,961.18
  6. Step 6: Final answer
    x = 50,602.82

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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.