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Finding the Fourth Proportional to 29,688.40, 44,529.40 and 12,160.08

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Solution

The fourth proportional to 29,688.40, 44,529.40 and 12,160.08 is: 18,238.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,688.40 : 44,529.40 = 12,160.08 : x
  2. Step 2: Convert to fraction form
    29,688.40/44,529.40 = 12,160.08/x
  3. Step 3: Cross multiply
    29,688.40x = 44,529.40 × 12,160.08
  4. Step 4: Simplify right side
    29,688.40x = 541,481,066.35
  5. Step 5: Solve for x
    x = 541,481,066.35/29,688.40
  6. Step 6: Final answer
    x = 18,238.81

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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.