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Finding the Fourth Proportional to 170,858.80, 256,288.20 and 92,126.80

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Solution

The fourth proportional to 170,858.80, 256,288.20 and 92,126.80 is: 138,190.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,858.80 : 256,288.20 = 92,126.80 : x
  2. Step 2: Convert to fraction form
    170,858.80/256,288.20 = 92,126.80/x
  3. Step 3: Cross multiply
    170,858.80x = 256,288.20 × 92,126.80
  4. Step 4: Simplify right side
    170,858.80x = 23,611,011,743.76
  5. Step 5: Solve for x
    x = 23,611,011,743.76/170,858.80
  6. Step 6: Final answer
    x = 138,190.20

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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.