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Finding the Fourth Proportional to 107,777.10, 161,665.65 and 82,865.10

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Solution

The fourth proportional to 107,777.10, 161,665.65 and 82,865.10 is: 124,297.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,777.10 : 161,665.65 = 82,865.10 : x
  2. Step 2: Convert to fraction form
    107,777.10/161,665.65 = 82,865.10/x
  3. Step 3: Cross multiply
    107,777.10x = 161,665.65 × 82,865.10
  4. Step 4: Simplify right side
    107,777.10x = 13,396,440,253.82
  5. Step 5: Solve for x
    x = 13,396,440,253.82/107,777.10
  6. Step 6: Final answer
    x = 124,297.65

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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.