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Finding the Fourth Proportional to 58,715.38, 81,018.61 and 32,872.60

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Solution

The fourth proportional to 58,715.38, 81,018.61 and 32,872.60 is: 45,359.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,715.38 : 81,018.61 = 32,872.60 : x
  2. Step 2: Convert to fraction form
    58,715.38/81,018.61 = 32,872.60/x
  3. Step 3: Cross multiply
    58,715.38x = 81,018.61 × 32,872.60
  4. Step 4: Simplify right side
    58,715.38x = 2,663,292,359.09
  5. Step 5: Solve for x
    x = 2,663,292,359.09/58,715.38
  6. Step 6: Final answer
    x = 45,359.37

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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.