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Finding the Fourth Proportional to 20,493.76, 30,718.74 and 14,632.60

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Solution

The fourth proportional to 20,493.76, 30,718.74 and 14,632.60 is: 21,933.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,493.76 : 30,718.74 = 14,632.60 : x
  2. Step 2: Convert to fraction form
    20,493.76/30,718.74 = 14,632.60/x
  3. Step 3: Cross multiply
    20,493.76x = 30,718.74 × 14,632.60
  4. Step 4: Simplify right side
    20,493.76x = 449,495,034.92
  5. Step 5: Solve for x
    x = 449,495,034.92/20,493.76
  6. Step 6: Final answer
    x = 21,933.26

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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.