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Finding the Fourth Proportional to 64,986.93, 89,675.46 and 36,687.15

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Solution

The fourth proportional to 64,986.93, 89,675.46 and 36,687.15 is: 50,624.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,986.93 : 89,675.46 = 36,687.15 : x
  2. Step 2: Convert to fraction form
    64,986.93/89,675.46 = 36,687.15/x
  3. Step 3: Cross multiply
    64,986.93x = 89,675.46 × 36,687.15
  4. Step 4: Simplify right side
    64,986.93x = 3,289,937,052.34
  5. Step 5: Solve for x
    x = 3,289,937,052.34/64,986.93
  6. Step 6: Final answer
    x = 50,624.60

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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.