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Finding the Fourth Proportional to 171,058.10, 256,628.88 and 120,555.59

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Solution

The fourth proportional to 171,058.10, 256,628.88 and 120,555.59 is: 180,862.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,058.10 : 256,628.88 = 120,555.59 : x
  2. Step 2: Convert to fraction form
    171,058.10/256,628.88 = 120,555.59/x
  3. Step 3: Cross multiply
    171,058.10x = 256,628.88 × 120,555.59
  4. Step 4: Simplify right side
    171,058.10x = 30,938,046,039.44
  5. Step 5: Solve for x
    x = 30,938,046,039.44/171,058.10
  6. Step 6: Final answer
    x = 180,862.79

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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.