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Finding the Fourth Proportional to 58,641.89, 80,866.49 and 52,161.08

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Solution

The fourth proportional to 58,641.89, 80,866.49 and 52,161.08 is: 71,929.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,641.89 : 80,866.49 = 52,161.08 : x
  2. Step 2: Convert to fraction form
    58,641.89/80,866.49 = 52,161.08/x
  3. Step 3: Cross multiply
    58,641.89x = 80,866.49 × 52,161.08
  4. Step 4: Simplify right side
    58,641.89x = 4,218,082,789.07
  5. Step 5: Solve for x
    x = 4,218,082,789.07/58,641.89
  6. Step 6: Final answer
    x = 71,929.52

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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.