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Finding the Fourth Proportional to 71,246.44, 106,865.34 and 18,654.76

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Solution

The fourth proportional to 71,246.44, 106,865.34 and 18,654.76 is: 27,981.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,246.44 : 106,865.34 = 18,654.76 : x
  2. Step 2: Convert to fraction form
    71,246.44/106,865.34 = 18,654.76/x
  3. Step 3: Cross multiply
    71,246.44x = 106,865.34 × 18,654.76
  4. Step 4: Simplify right side
    71,246.44x = 1,993,547,270.02
  5. Step 5: Solve for x
    x = 1,993,547,270.02/71,246.44
  6. Step 6: Final answer
    x = 27,981.01

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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.