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Finding the Fourth Proportional to 30,566.97, 42,181.70 and 16,954.97

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Solution

The fourth proportional to 30,566.97, 42,181.70 and 16,954.97 is: 23,397.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,566.97 : 42,181.70 = 16,954.97 : x
  2. Step 2: Convert to fraction form
    30,566.97/42,181.70 = 16,954.97/x
  3. Step 3: Cross multiply
    30,566.97x = 42,181.70 × 16,954.97
  4. Step 4: Simplify right side
    30,566.97x = 715,189,162.37
  5. Step 5: Solve for x
    x = 715,189,162.37/30,566.97
  6. Step 6: Final answer
    x = 23,397.45

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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.