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Finding the Fourth Proportional to 58,893.72, 81,265.98 and 39,815.01

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Solution

The fourth proportional to 58,893.72, 81,265.98 and 39,815.01 is: 54,939.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,893.72 : 81,265.98 = 39,815.01 : x
  2. Step 2: Convert to fraction form
    58,893.72/81,265.98 = 39,815.01/x
  3. Step 3: Cross multiply
    58,893.72x = 81,265.98 × 39,815.01
  4. Step 4: Simplify right side
    58,893.72x = 3,235,605,806.36
  5. Step 5: Solve for x
    x = 3,235,605,806.36/58,893.72
  6. Step 6: Final answer
    x = 54,939.74

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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.