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Finding the Fourth Proportional to 108,328.79, 162,531.65 and 48,351.80

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Solution

The fourth proportional to 108,328.79, 162,531.65 and 48,351.80 is: 72,544.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,328.79 : 162,531.65 = 48,351.80 : x
  2. Step 2: Convert to fraction form
    108,328.79/162,531.65 = 48,351.80/x
  3. Step 3: Cross multiply
    108,328.79x = 162,531.65 × 48,351.80
  4. Step 4: Simplify right side
    108,328.79x = 7,858,698,361.68
  5. Step 5: Solve for x
    x = 7,858,698,361.68/108,328.79
  6. Step 6: Final answer
    x = 72,544.87

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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.