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Finding the Fourth Proportional to 109,872.40, 164,808.60 and 46,676.20

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Solution

The fourth proportional to 109,872.40, 164,808.60 and 46,676.20 is: 70,014.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,872.40 : 164,808.60 = 46,676.20 : x
  2. Step 2: Convert to fraction form
    109,872.40/164,808.60 = 46,676.20/x
  3. Step 3: Cross multiply
    109,872.40x = 164,808.60 × 46,676.20
  4. Step 4: Simplify right side
    109,872.40x = 7,692,639,175.32
  5. Step 5: Solve for x
    x = 7,692,639,175.32/109,872.40
  6. Step 6: Final answer
    x = 70,014.30

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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.