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Finding the Fourth Proportional to 30,393.72, 41,938.98 and 16,963.08

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Solution

The fourth proportional to 30,393.72, 41,938.98 and 16,963.08 is: 23,406.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,393.72 : 41,938.98 = 16,963.08 : x
  2. Step 2: Convert to fraction form
    30,393.72/41,938.98 = 16,963.08/x
  3. Step 3: Cross multiply
    30,393.72x = 41,938.98 × 16,963.08
  4. Step 4: Simplify right side
    30,393.72x = 711,414,272.86
  5. Step 5: Solve for x
    x = 711,414,272.86/30,393.72
  6. Step 6: Final answer
    x = 23,406.62

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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.