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Finding the Fourth Proportional to 25,398.42, 35,049.78 and 14,220.42

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Solution

The fourth proportional to 25,398.42, 35,049.78 and 14,220.42 is: 19,624.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,398.42 : 35,049.78 = 14,220.42 : x
  2. Step 2: Convert to fraction form
    25,398.42/35,049.78 = 14,220.42/x
  3. Step 3: Cross multiply
    25,398.42x = 35,049.78 × 14,220.42
  4. Step 4: Simplify right side
    25,398.42x = 498,422,592.51
  5. Step 5: Solve for x
    x = 498,422,592.51/25,398.42
  6. Step 6: Final answer
    x = 19,624.16

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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.