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Finding the Fourth Proportional to 25,620.99, 35,355.99 and 14,290.97

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Solution

The fourth proportional to 25,620.99, 35,355.99 and 14,290.97 is: 19,720.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,620.99 : 35,355.99 = 14,290.97 : x
  2. Step 2: Convert to fraction form
    25,620.99/35,355.99 = 14,290.97/x
  3. Step 3: Cross multiply
    25,620.99x = 35,355.99 × 14,290.97
  4. Step 4: Simplify right side
    25,620.99x = 505,271,215.63
  5. Step 5: Solve for x
    x = 505,271,215.63/25,620.99
  6. Step 6: Final answer
    x = 19,720.99

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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.