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Finding the Fourth Proportional to 16,905.51, 25,305.08 and 11,609.51

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Solution

The fourth proportional to 16,905.51, 25,305.08 and 11,609.51 is: 17,377.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,905.51 : 25,305.08 = 11,609.51 : x
  2. Step 2: Convert to fraction form
    16,905.51/25,305.08 = 11,609.51/x
  3. Step 3: Cross multiply
    16,905.51x = 25,305.08 × 11,609.51
  4. Step 4: Simplify right side
    16,905.51x = 293,779,394.74
  5. Step 5: Solve for x
    x = 293,779,394.74/16,905.51
  6. Step 6: Final answer
    x = 17,377.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.