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Finding the Fourth Proportional to 55,688.80, 83,421.80 and 33,489.94

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Solution

The fourth proportional to 55,688.80, 83,421.80 and 33,489.94 is: 50,167.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,688.80 : 83,421.80 = 33,489.94 : x
  2. Step 2: Convert to fraction form
    55,688.80/83,421.80 = 33,489.94/x
  3. Step 3: Cross multiply
    55,688.80x = 83,421.80 × 33,489.94
  4. Step 4: Simplify right side
    55,688.80x = 2,793,791,076.69
  5. Step 5: Solve for x
    x = 2,793,791,076.69/55,688.80
  6. Step 6: Final answer
    x = 50,167.92

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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.