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Finding the Fourth Proportional to 29,369.99, 40,529.50 and 15,940.96

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Solution

The fourth proportional to 29,369.99, 40,529.50 and 15,940.96 is: 21,997.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,369.99 : 40,529.50 = 15,940.96 : x
  2. Step 2: Convert to fraction form
    29,369.99/40,529.50 = 15,940.96/x
  3. Step 3: Cross multiply
    29,369.99x = 40,529.50 × 15,940.96
  4. Step 4: Simplify right side
    29,369.99x = 646,078,935.67
  5. Step 5: Solve for x
    x = 646,078,935.67/29,369.99
  6. Step 6: Final answer
    x = 21,997.93

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1.5x scale

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.