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Finding the Fourth Proportional to 73,958.68, 110,916.12 and 21,368.64

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Solution

The fourth proportional to 73,958.68, 110,916.12 and 21,368.64 is: 32,046.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,958.68 : 110,916.12 = 21,368.64 : x
  2. Step 2: Convert to fraction form
    73,958.68/110,916.12 = 21,368.64/x
  3. Step 3: Cross multiply
    73,958.68x = 110,916.12 × 21,368.64
  4. Step 4: Simplify right side
    73,958.68x = 2,370,126,638.48
  5. Step 5: Solve for x
    x = 2,370,126,638.48/73,958.68
  6. Step 6: Final answer
    x = 32,046.63

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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.