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Finding the Fourth Proportional to 14,662.86, 20,234.21 and 7,948.36

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Solution

The fourth proportional to 14,662.86, 20,234.21 and 7,948.36 is: 10,968.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,662.86 : 20,234.21 = 7,948.36 : x
  2. Step 2: Convert to fraction form
    14,662.86/20,234.21 = 7,948.36/x
  3. Step 3: Cross multiply
    14,662.86x = 20,234.21 × 7,948.36
  4. Step 4: Simplify right side
    14,662.86x = 160,828,770.95
  5. Step 5: Solve for x
    x = 160,828,770.95/14,662.86
  6. Step 6: Final answer
    x = 10,968.45

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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.