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Finding the Fourth Proportional to 58,871.24, 88,309.90 and 19,431.42

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Solution

The fourth proportional to 58,871.24, 88,309.90 and 19,431.42 is: 29,148.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,871.24 : 88,309.90 = 19,431.42 : x
  2. Step 2: Convert to fraction form
    58,871.24/88,309.90 = 19,431.42/x
  3. Step 3: Cross multiply
    58,871.24x = 88,309.90 × 19,431.42
  4. Step 4: Simplify right side
    58,871.24x = 1,715,986,757.06
  5. Step 5: Solve for x
    x = 1,715,986,757.06/58,871.24
  6. Step 6: Final answer
    x = 29,148.13

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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.