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Finding the Fourth Proportional to 8,969.96, 13,455.41 and 2,729.50

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Solution

The fourth proportional to 8,969.96, 13,455.41 and 2,729.50 is: 4,094.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,969.96 : 13,455.41 = 2,729.50 : x
  2. Step 2: Convert to fraction form
    8,969.96/13,455.41 = 2,729.50/x
  3. Step 3: Cross multiply
    8,969.96x = 13,455.41 × 2,729.50
  4. Step 4: Simplify right side
    8,969.96x = 36,726,494.31
  5. Step 5: Solve for x
    x = 36,726,494.31/8,969.96
  6. Step 6: Final answer
    x = 4,094.39

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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.