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Finding the Fourth Proportional to 29,712.80, 44,558.40 and 14,916.80

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Solution

The fourth proportional to 29,712.80, 44,558.40 and 14,916.80 is: 22,369.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,712.80 : 44,558.40 = 14,916.80 : x
  2. Step 2: Convert to fraction form
    29,712.80/44,558.40 = 14,916.80/x
  3. Step 3: Cross multiply
    29,712.80x = 44,558.40 × 14,916.80
  4. Step 4: Simplify right side
    29,712.80x = 664,668,741.12
  5. Step 5: Solve for x
    x = 664,668,741.12/29,712.80
  6. Step 6: Final answer
    x = 22,369.78

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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.