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Finding the Fourth Proportional to 55,332.09, 82,998.09 and 20,274.48

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Solution

The fourth proportional to 55,332.09, 82,998.09 and 20,274.48 is: 30,411.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,332.09 : 82,998.09 = 20,274.48 : x
  2. Step 2: Convert to fraction form
    55,332.09/82,998.09 = 20,274.48/x
  3. Step 3: Cross multiply
    55,332.09x = 82,998.09 × 20,274.48
  4. Step 4: Simplify right side
    55,332.09x = 1,682,743,115.74
  5. Step 5: Solve for x
    x = 1,682,743,115.74/55,332.09
  6. Step 6: Final answer
    x = 30,411.70

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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.