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Finding the Fourth Proportional to 25,390.98, 35,039.46 and 14,212.98

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Solution

The fourth proportional to 25,390.98, 35,039.46 and 14,212.98 is: 19,613.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,390.98 : 35,039.46 = 14,212.98 : x
  2. Step 2: Convert to fraction form
    25,390.98/35,039.46 = 14,212.98/x
  3. Step 3: Cross multiply
    25,390.98x = 35,039.46 × 14,212.98
  4. Step 4: Simplify right side
    25,390.98x = 498,015,144.19
  5. Step 5: Solve for x
    x = 498,015,144.19/25,390.98
  6. Step 6: Final answer
    x = 19,613.86

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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.