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Finding the Fourth Proportional to 29,369.81, 40,530.63 and 15,941.18

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Solution

The fourth proportional to 29,369.81, 40,530.63 and 15,941.18 is: 21,998.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,369.81 : 40,530.63 = 15,941.18 : x
  2. Step 2: Convert to fraction form
    29,369.81/40,530.63 = 15,941.18/x
  3. Step 3: Cross multiply
    29,369.81x = 40,530.63 × 15,941.18
  4. Step 4: Simplify right side
    29,369.81x = 646,105,865.69
  5. Step 5: Solve for x
    x = 646,105,865.69/29,369.81
  6. Step 6: Final answer
    x = 21,998.98

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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.