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Finding the Fourth Proportional to 108,732.80, 163,091.10 and 45,536.60

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Solution

The fourth proportional to 108,732.80, 163,091.10 and 45,536.60 is: 68,301.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,732.80 : 163,091.10 = 45,536.60 : x
  2. Step 2: Convert to fraction form
    108,732.80/163,091.10 = 45,536.60/x
  3. Step 3: Cross multiply
    108,732.80x = 163,091.10 × 45,536.60
  4. Step 4: Simplify right side
    108,732.80x = 7,426,614,184.26
  5. Step 5: Solve for x
    x = 7,426,614,184.26/108,732.80
  6. Step 6: Final answer
    x = 68,301.51

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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.