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Finding the Fourth Proportional to 25,706.80, 35,474.70 and 14,528.80

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Solution

The fourth proportional to 25,706.80, 35,474.70 and 14,528.80 is: 20,049.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,706.80 : 35,474.70 = 14,528.80 : x
  2. Step 2: Convert to fraction form
    25,706.80/35,474.70 = 14,528.80/x
  3. Step 3: Cross multiply
    25,706.80x = 35,474.70 × 14,528.80
  4. Step 4: Simplify right side
    25,706.80x = 515,404,821.36
  5. Step 5: Solve for x
    x = 515,404,821.36/25,706.80
  6. Step 6: Final answer
    x = 20,049.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.