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Finding the Fourth Proportional to 64,528.94, 89,040.31 and 36,229.16

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Solution

The fourth proportional to 64,528.94, 89,040.31 and 36,229.16 is: 49,990.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,528.94 : 89,040.31 = 36,229.16 : x
  2. Step 2: Convert to fraction form
    64,528.94/89,040.31 = 36,229.16/x
  3. Step 3: Cross multiply
    64,528.94x = 89,040.31 × 36,229.16
  4. Step 4: Simplify right side
    64,528.94x = 3,225,855,101.67
  5. Step 5: Solve for x
    x = 3,225,855,101.67/64,528.94
  6. Step 6: Final answer
    x = 49,990.83

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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.