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Finding the Fourth Proportional to 58,449.42, 87,712.97 and 21,513.42

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Solution

The fourth proportional to 58,449.42, 87,712.97 and 21,513.42 is: 32,284.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,449.42 : 87,712.97 = 21,513.42 : x
  2. Step 2: Convert to fraction form
    58,449.42/87,712.97 = 21,513.42/x
  3. Step 3: Cross multiply
    58,449.42x = 87,712.97 × 21,513.42
  4. Step 4: Simplify right side
    58,449.42x = 1,887,005,963.06
  5. Step 5: Solve for x
    x = 1,887,005,963.06/58,449.42
  6. Step 6: Final answer
    x = 32,284.43

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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.