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Finding the Fourth Proportional to 61,156.92, 91,744.50 and 21,710.73

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Solution

The fourth proportional to 61,156.92, 91,744.50 and 21,710.73 is: 32,569.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,156.92 : 91,744.50 = 21,710.73 : x
  2. Step 2: Convert to fraction form
    61,156.92/91,744.50 = 21,710.73/x
  3. Step 3: Cross multiply
    61,156.92x = 91,744.50 × 21,710.73
  4. Step 4: Simplify right side
    61,156.92x = 1,991,840,068.49
  5. Step 5: Solve for x
    x = 1,991,840,068.49/61,156.92
  6. Step 6: Final answer
    x = 32,569.33

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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.