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Finding the Fourth Proportional to 53,674.71, 80,489.55 and 20,376.42

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Solution

The fourth proportional to 53,674.71, 80,489.55 and 20,376.42 is: 30,556.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,674.71 : 80,489.55 = 20,376.42 : x
  2. Step 2: Convert to fraction form
    53,674.71/80,489.55 = 20,376.42/x
  3. Step 3: Cross multiply
    53,674.71x = 80,489.55 × 20,376.42
  4. Step 4: Simplify right side
    53,674.71x = 1,640,088,876.41
  5. Step 5: Solve for x
    x = 1,640,088,876.41/53,674.71
  6. Step 6: Final answer
    x = 30,556.08

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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.