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Finding the Fourth Proportional to 108,066.50, 149,149.06 and 63,354.50

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Solution

The fourth proportional to 108,066.50, 149,149.06 and 63,354.50 is: 87,439.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,066.50 : 149,149.06 = 63,354.50 : x
  2. Step 2: Convert to fraction form
    108,066.50/149,149.06 = 63,354.50/x
  3. Step 3: Cross multiply
    108,066.50x = 149,149.06 × 63,354.50
  4. Step 4: Simplify right side
    108,066.50x = 9,449,264,121.77
  5. Step 5: Solve for x
    x = 9,449,264,121.77/108,066.50
  6. Step 6: Final answer
    x = 87,439.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.