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Finding the Fourth Proportional to 17,285.80, 25,928.70 and 14,515.60

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Solution

The fourth proportional to 17,285.80, 25,928.70 and 14,515.60 is: 21,773.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,285.80 : 25,928.70 = 14,515.60 : x
  2. Step 2: Convert to fraction form
    17,285.80/25,928.70 = 14,515.60/x
  3. Step 3: Cross multiply
    17,285.80x = 25,928.70 × 14,515.60
  4. Step 4: Simplify right side
    17,285.80x = 376,370,637.72
  5. Step 5: Solve for x
    x = 376,370,637.72/17,285.80
  6. Step 6: Final answer
    x = 21,773.40

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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.