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Finding the Fourth Proportional to 55,367.80, 83,051.70 and 20,302.90

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Solution

The fourth proportional to 55,367.80, 83,051.70 and 20,302.90 is: 30,454.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,367.80 : 83,051.70 = 20,302.90 : x
  2. Step 2: Convert to fraction form
    55,367.80/83,051.70 = 20,302.90/x
  3. Step 3: Cross multiply
    55,367.80x = 83,051.70 × 20,302.90
  4. Step 4: Simplify right side
    55,367.80x = 1,686,190,359.93
  5. Step 5: Solve for x
    x = 1,686,190,359.93/55,367.80
  6. Step 6: Final answer
    x = 30,454.35

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