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Finding the Fourth Proportional to 55,292.59, 82,938.89 and 13,739.59

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Solution

The fourth proportional to 55,292.59, 82,938.89 and 13,739.59 is: 20,609.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,292.59 : 82,938.89 = 13,739.59 : x
  2. Step 2: Convert to fraction form
    55,292.59/82,938.89 = 13,739.59/x
  3. Step 3: Cross multiply
    55,292.59x = 82,938.89 × 13,739.59
  4. Step 4: Simplify right side
    55,292.59x = 1,139,546,343.66
  5. Step 5: Solve for x
    x = 1,139,546,343.66/55,292.59
  6. Step 6: Final answer
    x = 20,609.39

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Similar ratio
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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.