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Finding the Fourth Proportional to 172,653.96, 238,245.30 and 127,356.42

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Solution

The fourth proportional to 172,653.96, 238,245.30 and 127,356.42 is: 175,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,653.96 : 238,245.30 = 127,356.42 : x
  2. Step 2: Convert to fraction form
    172,653.96/238,245.30 = 127,356.42/x
  3. Step 3: Cross multiply
    172,653.96x = 238,245.30 × 127,356.42
  4. Step 4: Simplify right side
    172,653.96x = 30,342,068,489.83
  5. Step 5: Solve for x
    x = 30,342,068,489.83/172,653.96
  6. Step 6: Final answer
    x = 175,739.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.