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Finding the Fourth Proportional to 171,497.40, 257,537.70 and 127,174.20

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Solution

The fourth proportional to 171,497.40, 257,537.70 and 127,174.20 is: 190,977.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,497.40 : 257,537.70 = 127,174.20 : x
  2. Step 2: Convert to fraction form
    171,497.40/257,537.70 = 127,174.20/x
  3. Step 3: Cross multiply
    171,497.40x = 257,537.70 × 127,174.20
  4. Step 4: Simplify right side
    171,497.40x = 32,752,150,967.34
  5. Step 5: Solve for x
    x = 32,752,150,967.34/171,497.40
  6. Step 6: Final answer
    x = 190,977.54

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1.5x scale

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.