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Finding the Fourth Proportional to 29,374.84, 40,536.16 and 15,945.81

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Solution

The fourth proportional to 29,374.84, 40,536.16 and 15,945.81 is: 22,004.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,374.84 : 40,536.16 = 15,945.81 : x
  2. Step 2: Convert to fraction form
    29,374.84/40,536.16 = 15,945.81/x
  3. Step 3: Cross multiply
    29,374.84x = 40,536.16 × 15,945.81
  4. Step 4: Simplify right side
    29,374.84x = 646,381,905.49
  5. Step 5: Solve for x
    x = 646,381,905.49/29,374.84
  6. Step 6: Final answer
    x = 22,004.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.