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Finding the Fourth Proportional to 58,665, 87,995.10 and 21,225.96

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Solution

The fourth proportional to 58,665, 87,995.10 and 21,225.96 is: 31,838.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,665 : 87,995.10 = 21,225.96 : x
  2. Step 2: Convert to fraction form
    58,665/87,995.10 = 21,225.96/x
  3. Step 3: Cross multiply
    58,665x = 87,995.10 × 21,225.96
  4. Step 4: Simplify right side
    58,665x = 1,867,780,472.80
  5. Step 5: Solve for x
    x = 1,867,780,472.80/58,665
  6. Step 6: Final answer
    x = 31,838.07

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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.