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Finding the Fourth Proportional to 172,164.32, 258,261.36 and 47,505.32

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Solution

The fourth proportional to 172,164.32, 258,261.36 and 47,505.32 is: 71,262.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,164.32 : 258,261.36 = 47,505.32 : x
  2. Step 2: Convert to fraction form
    172,164.32/258,261.36 = 47,505.32/x
  3. Step 3: Cross multiply
    172,164.32x = 258,261.36 × 47,505.32
  4. Step 4: Simplify right side
    172,164.32x = 12,268,788,550.44
  5. Step 5: Solve for x
    x = 12,268,788,550.44/172,164.32
  6. Step 6: Final answer
    x = 71,262.09

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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.