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Finding the Fourth Proportional to 71,056.85, 106,581.02 and 26,679.78

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Solution

The fourth proportional to 71,056.85, 106,581.02 and 26,679.78 is: 40,018.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,056.85 : 106,581.02 = 26,679.78 : x
  2. Step 2: Convert to fraction form
    71,056.85/106,581.02 = 26,679.78/x
  3. Step 3: Cross multiply
    71,056.85x = 106,581.02 × 26,679.78
  4. Step 4: Simplify right side
    71,056.85x = 2,843,558,032.38
  5. Step 5: Solve for x
    x = 2,843,558,032.38/71,056.85
  6. Step 6: Final answer
    x = 40,018.07

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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.