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Finding the Fourth Proportional to 20,597.64, 30,891.60 and 9,497.40

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Solution

The fourth proportional to 20,597.64, 30,891.60 and 9,497.40 is: 14,243.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,597.64 : 30,891.60 = 9,497.40 : x
  2. Step 2: Convert to fraction form
    20,597.64/30,891.60 = 9,497.40/x
  3. Step 3: Cross multiply
    20,597.64x = 30,891.60 × 9,497.40
  4. Step 4: Simplify right side
    20,597.64x = 293,389,881.84
  5. Step 5: Solve for x
    x = 293,389,881.84/20,597.64
  6. Step 6: Final answer
    x = 14,243.86

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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.