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Finding the Fourth Proportional to 19,614.54, 29,421.80 and 7,935.96

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Solution

The fourth proportional to 19,614.54, 29,421.80 and 7,935.96 is: 11,903.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,614.54 : 29,421.80 = 7,935.96 : x
  2. Step 2: Convert to fraction form
    19,614.54/29,421.80 = 7,935.96/x
  3. Step 3: Cross multiply
    19,614.54x = 29,421.80 × 7,935.96
  4. Step 4: Simplify right side
    19,614.54x = 233,490,227.93
  5. Step 5: Solve for x
    x = 233,490,227.93/19,614.54
  6. Step 6: Final answer
    x = 11,903.94

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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.