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Finding the Fourth Proportional to 19,333.97, 28,994.47 and 8,653.64

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Solution

The fourth proportional to 19,333.97, 28,994.47 and 8,653.64 is: 12,977.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,333.97 : 28,994.47 = 8,653.64 : x
  2. Step 2: Convert to fraction form
    19,333.97/28,994.47 = 8,653.64/x
  3. Step 3: Cross multiply
    19,333.97x = 28,994.47 × 8,653.64
  4. Step 4: Simplify right side
    19,333.97x = 250,907,647.49
  5. Step 5: Solve for x
    x = 250,907,647.49/19,333.97
  6. Step 6: Final answer
    x = 12,977.55

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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.