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Finding the Fourth Proportional to 25,865.45, 35,694.35 and 14,687.45

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Solution

The fourth proportional to 25,865.45, 35,694.35 and 14,687.45 is: 20,268.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,865.45 : 35,694.35 = 14,687.45 : x
  2. Step 2: Convert to fraction form
    25,865.45/35,694.35 = 14,687.45/x
  3. Step 3: Cross multiply
    25,865.45x = 35,694.35 × 14,687.45
  4. Step 4: Simplify right side
    25,865.45x = 524,258,729.00
  5. Step 5: Solve for x
    x = 524,258,729.00/25,865.45
  6. Step 6: Final answer
    x = 20,268.69

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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.