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Finding the Fourth Proportional to 58,553.71, 87,861.31 and 31,918.79

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Solution

The fourth proportional to 58,553.71, 87,861.31 and 31,918.79 is: 47,894.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,553.71 : 87,861.31 = 31,918.79 : x
  2. Step 2: Convert to fraction form
    58,553.71/87,861.31 = 31,918.79/x
  3. Step 3: Cross multiply
    58,553.71x = 87,861.31 × 31,918.79
  4. Step 4: Simplify right side
    58,553.71x = 2,804,426,842.87
  5. Step 5: Solve for x
    x = 2,804,426,842.87/58,553.71
  6. Step 6: Final answer
    x = 47,894.95

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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.