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Finding the Fourth Proportional to 79,466.64, 119,222.28 and 64,638.48

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Solution

The fourth proportional to 79,466.64, 119,222.28 and 64,638.48 is: 96,975.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,466.64 : 119,222.28 = 64,638.48 : x
  2. Step 2: Convert to fraction form
    79,466.64/119,222.28 = 64,638.48/x
  3. Step 3: Cross multiply
    79,466.64x = 119,222.28 × 64,638.48
  4. Step 4: Simplify right side
    79,466.64x = 7,706,346,961.33
  5. Step 5: Solve for x
    x = 7,706,346,961.33/79,466.64
  6. Step 6: Final answer
    x = 96,975.88

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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.