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Finding the Fourth Proportional to 170,805.10, 256,246.05 and 100,648.30

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Solution

The fourth proportional to 170,805.10, 256,246.05 and 100,648.30 is: 150,995.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,805.10 : 256,246.05 = 100,648.30 : x
  2. Step 2: Convert to fraction form
    170,805.10/256,246.05 = 100,648.30/x
  3. Step 3: Cross multiply
    170,805.10x = 256,246.05 × 100,648.30
  4. Step 4: Simplify right side
    170,805.10x = 25,790,729,314.22
  5. Step 5: Solve for x
    x = 25,790,729,314.22/170,805.10
  6. Step 6: Final answer
    x = 150,995.08

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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.