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Finding the Fourth Proportional to 64,915.88, 97,383.66 and 20,527.88

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Solution

The fourth proportional to 64,915.88, 97,383.66 and 20,527.88 is: 30,794.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,915.88 : 97,383.66 = 20,527.88 : x
  2. Step 2: Convert to fraction form
    64,915.88/97,383.66 = 20,527.88/x
  3. Step 3: Cross multiply
    64,915.88x = 97,383.66 × 20,527.88
  4. Step 4: Simplify right side
    64,915.88x = 1,999,080,086.44
  5. Step 5: Solve for x
    x = 1,999,080,086.44/64,915.88
  6. Step 6: Final answer
    x = 30,794.93

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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.