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Finding the Fourth Proportional to 29,788.76, 44,633.94 and 21,005.22

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Solution

The fourth proportional to 29,788.76, 44,633.94 and 21,005.22 is: 31,473.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,788.76 : 44,633.94 = 21,005.22 : x
  2. Step 2: Convert to fraction form
    29,788.76/44,633.94 = 21,005.22/x
  3. Step 3: Cross multiply
    29,788.76x = 44,633.94 × 21,005.22
  4. Step 4: Simplify right side
    29,788.76x = 937,545,817.77
  5. Step 5: Solve for x
    x = 937,545,817.77/29,788.76
  6. Step 6: Final answer
    x = 31,473.14

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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.