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Finding the Fourth Proportional to 28,940.64, 43,410.68 and 21,963.50

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Solution

The fourth proportional to 28,940.64, 43,410.68 and 21,963.50 is: 32,945.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,940.64 : 43,410.68 = 21,963.50 : x
  2. Step 2: Convert to fraction form
    28,940.64/43,410.68 = 21,963.50/x
  3. Step 3: Cross multiply
    28,940.64x = 43,410.68 × 21,963.50
  4. Step 4: Simplify right side
    28,940.64x = 953,450,756.19
  5. Step 5: Solve for x
    x = 953,450,756.19/28,940.64
  6. Step 6: Final answer
    x = 32,945.05

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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.