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Finding the Fourth Proportional to 135,915.92, 203,783.88 and 64,849.52

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Solution

The fourth proportional to 135,915.92, 203,783.88 and 64,849.52 is: 97,231.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,915.92 : 203,783.88 = 64,849.52 : x
  2. Step 2: Convert to fraction form
    135,915.92/203,783.88 = 64,849.52/x
  3. Step 3: Cross multiply
    135,915.92x = 203,783.88 × 64,849.52
  4. Step 4: Simplify right side
    135,915.92x = 13,215,285,782.82
  5. Step 5: Solve for x
    x = 13,215,285,782.82/135,915.92
  6. Step 6: Final answer
    x = 97,231.33

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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.