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Finding the Fourth Proportional to 64,928.94, 89,607.41 and 36,640.10

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Solution

The fourth proportional to 64,928.94, 89,607.41 and 36,640.10 is: 50,566.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,928.94 : 89,607.41 = 36,640.10 : x
  2. Step 2: Convert to fraction form
    64,928.94/89,607.41 = 36,640.10/x
  3. Step 3: Cross multiply
    64,928.94x = 89,607.41 × 36,640.10
  4. Step 4: Simplify right side
    64,928.94x = 3,283,223,831.90
  5. Step 5: Solve for x
    x = 3,283,223,831.90/64,928.94
  6. Step 6: Final answer
    x = 50,566.42

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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.