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Finding the Fourth Proportional to 108,563.64, 163,585.01 and 89,274.30

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Solution

The fourth proportional to 108,563.64, 163,585.01 and 89,274.30 is: 134,519.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,563.64 : 163,585.01 = 89,274.30 : x
  2. Step 2: Convert to fraction form
    108,563.64/163,585.01 = 89,274.30/x
  3. Step 3: Cross multiply
    108,563.64x = 163,585.01 × 89,274.30
  4. Step 4: Simplify right side
    108,563.64x = 14,603,936,811.87
  5. Step 5: Solve for x
    x = 14,603,936,811.87/108,563.64
  6. Step 6: Final answer
    x = 134,519.59

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.