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Finding the Fourth Proportional to 64,881.33, 89,540.60 and 36,206.11

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Solution

The fourth proportional to 64,881.33, 89,540.60 and 36,206.11 is: 49,966.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,881.33 : 89,540.60 = 36,206.11 : x
  2. Step 2: Convert to fraction form
    64,881.33/89,540.60 = 36,206.11/x
  3. Step 3: Cross multiply
    64,881.33x = 89,540.60 × 36,206.11
  4. Step 4: Simplify right side
    64,881.33x = 3,241,916,813.07
  5. Step 5: Solve for x
    x = 3,241,916,813.07/64,881.33
  6. Step 6: Final answer
    x = 49,966.87

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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.