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Finding the Fourth Proportional to 58,391.96, 87,599.48 and 20,942.01

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Solution

The fourth proportional to 58,391.96, 87,599.48 and 20,942.01 is: 31,417.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,391.96 : 87,599.48 = 20,942.01 : x
  2. Step 2: Convert to fraction form
    58,391.96/87,599.48 = 20,942.01/x
  3. Step 3: Cross multiply
    58,391.96x = 87,599.48 × 20,942.01
  4. Step 4: Simplify right side
    58,391.96x = 1,834,509,081.44
  5. Step 5: Solve for x
    x = 1,834,509,081.44/58,391.96
  6. Step 6: Final answer
    x = 31,417.15

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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.