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Finding the Fourth Proportional to 107,819.40, 161,729.10 and 48,683.40

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Solution

The fourth proportional to 107,819.40, 161,729.10 and 48,683.40 is: 73,025.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,819.40 : 161,729.10 = 48,683.40 : x
  2. Step 2: Convert to fraction form
    107,819.40/161,729.10 = 48,683.40/x
  3. Step 3: Cross multiply
    107,819.40x = 161,729.10 × 48,683.40
  4. Step 4: Simplify right side
    107,819.40x = 7,873,522,466.94
  5. Step 5: Solve for x
    x = 7,873,522,466.94/107,819.40
  6. Step 6: Final answer
    x = 73,025.10

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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.