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Finding the Fourth Proportional to 14,941.71, 20,612.61 and 9,561.60

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Solution

The fourth proportional to 14,941.71, 20,612.61 and 9,561.60 is: 13,190.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,941.71 : 20,612.61 = 9,561.60 : x
  2. Step 2: Convert to fraction form
    14,941.71/20,612.61 = 9,561.60/x
  3. Step 3: Cross multiply
    14,941.71x = 20,612.61 × 9,561.60
  4. Step 4: Simplify right side
    14,941.71x = 197,089,531.78
  5. Step 5: Solve for x
    x = 197,089,531.78/14,941.71
  6. Step 6: Final answer
    x = 13,190.56

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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.