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Finding the Fourth Proportional to 108,720.80, 163,073.10 and 45,524.60

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Solution

The fourth proportional to 108,720.80, 163,073.10 and 45,524.60 is: 68,283.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,720.80 : 163,073.10 = 45,524.60 : x
  2. Step 2: Convert to fraction form
    108,720.80/163,073.10 = 45,524.60/x
  3. Step 3: Cross multiply
    108,720.80x = 163,073.10 × 45,524.60
  4. Step 4: Simplify right side
    108,720.80x = 7,423,837,648.26
  5. Step 5: Solve for x
    x = 7,423,837,648.26/108,720.80
  6. Step 6: Final answer
    x = 68,283.51

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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.