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Finding the Fourth Proportional to 64,935.73, 89,596.09 and 39,441.39

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Solution

The fourth proportional to 64,935.73, 89,596.09 and 39,441.39 is: 54,419.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,935.73 : 89,596.09 = 39,441.39 : x
  2. Step 2: Convert to fraction form
    64,935.73/89,596.09 = 39,441.39/x
  3. Step 3: Cross multiply
    64,935.73x = 89,596.09 × 39,441.39
  4. Step 4: Simplify right side
    64,935.73x = 3,533,794,041.48
  5. Step 5: Solve for x
    x = 3,533,794,041.48/64,935.73
  6. Step 6: Final answer
    x = 54,419.87

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1.5x scale

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.