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Finding the Fourth Proportional to 14,662.80, 21,994.20 and 9,705.60

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Solution

The fourth proportional to 14,662.80, 21,994.20 and 9,705.60 is: 14,558.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,662.80 : 21,994.20 = 9,705.60 : x
  2. Step 2: Convert to fraction form
    14,662.80/21,994.20 = 9,705.60/x
  3. Step 3: Cross multiply
    14,662.80x = 21,994.20 × 9,705.60
  4. Step 4: Simplify right side
    14,662.80x = 213,466,907.52
  5. Step 5: Solve for x
    x = 213,466,907.52/14,662.80
  6. Step 6: Final answer
    x = 14,558.40

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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.