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Finding the Fourth Proportional to 73,291.79, 109,938.13 and 20,701.73

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Solution

The fourth proportional to 73,291.79, 109,938.13 and 20,701.73 is: 31,052.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,291.79 : 109,938.13 = 20,701.73 : x
  2. Step 2: Convert to fraction form
    73,291.79/109,938.13 = 20,701.73/x
  3. Step 3: Cross multiply
    73,291.79x = 109,938.13 × 20,701.73
  4. Step 4: Simplify right side
    73,291.79x = 2,275,909,707.06
  5. Step 5: Solve for x
    x = 2,275,909,707.06/73,291.79
  6. Step 6: Final answer
    x = 31,052.72

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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.