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Finding the Fourth Proportional to 65,920.50, 98,880.53 and 16,000.56

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Solution

The fourth proportional to 65,920.50, 98,880.53 and 16,000.56 is: 24,000.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,920.50 : 98,880.53 = 16,000.56 : x
  2. Step 2: Convert to fraction form
    65,920.50/98,880.53 = 16,000.56/x
  3. Step 3: Cross multiply
    65,920.50x = 98,880.53 × 16,000.56
  4. Step 4: Simplify right side
    65,920.50x = 1,582,143,773.09
  5. Step 5: Solve for x
    x = 1,582,143,773.09/65,920.50
  6. Step 6: Final answer
    x = 24,000.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.