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Finding the Fourth Proportional to 25,857.45, 35,687.93 and 15,246.45

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Solution

The fourth proportional to 25,857.45, 35,687.93 and 15,246.45 is: 21,042.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,857.45 : 35,687.93 = 15,246.45 : x
  2. Step 2: Convert to fraction form
    25,857.45/35,687.93 = 15,246.45/x
  3. Step 3: Cross multiply
    25,857.45x = 35,687.93 × 15,246.45
  4. Step 4: Simplify right side
    25,857.45x = 544,114,164.12
  5. Step 5: Solve for x
    x = 544,114,164.12/25,857.45
  6. Step 6: Final answer
    x = 21,042.84

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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.