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Finding the Fourth Proportional to 4,608.48, 6,915.60 and 1,872.48

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Solution

The fourth proportional to 4,608.48, 6,915.60 and 1,872.48 is: 2,809.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,608.48 : 6,915.60 = 1,872.48 : x
  2. Step 2: Convert to fraction form
    4,608.48/6,915.60 = 1,872.48/x
  3. Step 3: Cross multiply
    4,608.48x = 6,915.60 × 1,872.48
  4. Step 4: Simplify right side
    4,608.48x = 12,949,322.69
  5. Step 5: Solve for x
    x = 12,949,322.69/4,608.48
  6. Step 6: Final answer
    x = 2,809.89

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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.