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Finding the Fourth Proportional to 171,647.40, 257,234.10 and 123,881.70

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Solution

The fourth proportional to 171,647.40, 257,234.10 and 123,881.70 is: 185,651.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,647.40 : 257,234.10 = 123,881.70 : x
  2. Step 2: Convert to fraction form
    171,647.40/257,234.10 = 123,881.70/x
  3. Step 3: Cross multiply
    171,647.40x = 257,234.10 × 123,881.70
  4. Step 4: Simplify right side
    171,647.40x = 31,866,597,605.97
  5. Step 5: Solve for x
    x = 31,866,597,605.97/171,647.40
  6. Step 6: Final answer
    x = 185,651.50

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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.