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Finding the Fourth Proportional to 21,842.81, 32,736.85 and 9,348.21

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Solution

The fourth proportional to 21,842.81, 32,736.85 and 9,348.21 is: 14,010.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,842.81 : 32,736.85 = 9,348.21 : x
  2. Step 2: Convert to fraction form
    21,842.81/32,736.85 = 9,348.21/x
  3. Step 3: Cross multiply
    21,842.81x = 32,736.85 × 9,348.21
  4. Step 4: Simplify right side
    21,842.81x = 306,030,784.85
  5. Step 5: Solve for x
    x = 306,030,784.85/21,842.81
  6. Step 6: Final answer
    x = 14,010.60

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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.