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Finding the Fourth Proportional to 61,333.56, 91,971.72 and 21,881.43

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Solution

The fourth proportional to 61,333.56, 91,971.72 and 21,881.43 is: 32,811.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,333.56 : 91,971.72 = 21,881.43 : x
  2. Step 2: Convert to fraction form
    61,333.56/91,971.72 = 21,881.43/x
  3. Step 3: Cross multiply
    61,333.56x = 91,971.72 × 21,881.43
  4. Step 4: Simplify right side
    61,333.56x = 2,012,472,753.16
  5. Step 5: Solve for x
    x = 2,012,472,753.16/61,333.56
  6. Step 6: Final answer
    x = 32,811.93

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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.