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Finding the Fourth Proportional to 81,676.69, 122,400.11 and 64,962.54

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Solution

The fourth proportional to 81,676.69, 122,400.11 and 64,962.54 is: 97,352.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,676.69 : 122,400.11 = 64,962.54 : x
  2. Step 2: Convert to fraction form
    81,676.69/122,400.11 = 64,962.54/x
  3. Step 3: Cross multiply
    81,676.69x = 122,400.11 × 64,962.54
  4. Step 4: Simplify right side
    81,676.69x = 7,951,422,204.29
  5. Step 5: Solve for x
    x = 7,951,422,204.29/81,676.69
  6. Step 6: Final answer
    x = 97,352.41

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1.5x scale

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.