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Finding the Fourth Proportional to 18,412.59, 25,409.39 and 10,029.09

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Solution

The fourth proportional to 18,412.59, 25,409.39 and 10,029.09 is: 13,840.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,412.59 : 25,409.39 = 10,029.09 : x
  2. Step 2: Convert to fraction form
    18,412.59/25,409.39 = 10,029.09/x
  3. Step 3: Cross multiply
    18,412.59x = 25,409.39 × 10,029.09
  4. Step 4: Simplify right side
    18,412.59x = 254,833,104.29
  5. Step 5: Solve for x
    x = 254,833,104.29/18,412.59
  6. Step 6: Final answer
    x = 13,840.15

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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.