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Finding the Fourth Proportional to 26,061.30, 39,103.02 and 12,913.92

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Solution

The fourth proportional to 26,061.30, 39,103.02 and 12,913.92 is: 19,376.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,061.30 : 39,103.02 = 12,913.92 : x
  2. Step 2: Convert to fraction form
    26,061.30/39,103.02 = 12,913.92/x
  3. Step 3: Cross multiply
    26,061.30x = 39,103.02 × 12,913.92
  4. Step 4: Simplify right side
    26,061.30x = 504,973,272.04
  5. Step 5: Solve for x
    x = 504,973,272.04/26,061.30
  6. Step 6: Final answer
    x = 19,376.37

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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.