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Finding the Fourth Proportional to 171,638.10, 257,453.10 and 46,979.10

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Solution

The fourth proportional to 171,638.10, 257,453.10 and 46,979.10 is: 70,467.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,638.10 : 257,453.10 = 46,979.10 : x
  2. Step 2: Convert to fraction form
    171,638.10/257,453.10 = 46,979.10/x
  3. Step 3: Cross multiply
    171,638.10x = 257,453.10 × 46,979.10
  4. Step 4: Simplify right side
    171,638.10x = 12,094,914,930.21
  5. Step 5: Solve for x
    x = 12,094,914,930.21/171,638.10
  6. Step 6: Final answer
    x = 70,467.54

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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.