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Finding the Fourth Proportional to 48,969.63, 73,454.46 and 13,431.32

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Solution

The fourth proportional to 48,969.63, 73,454.46 and 13,431.32 is: 20,146.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,969.63 : 73,454.46 = 13,431.32 : x
  2. Step 2: Convert to fraction form
    48,969.63/73,454.46 = 13,431.32/x
  3. Step 3: Cross multiply
    48,969.63x = 73,454.46 × 13,431.32
  4. Step 4: Simplify right side
    48,969.63x = 986,590,291.05
  5. Step 5: Solve for x
    x = 986,590,291.05/48,969.63
  6. Step 6: Final answer
    x = 20,146.98

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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.