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Finding the Fourth Proportional to 39,608.40, 59,315.40 and 26,389.20

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Solution

The fourth proportional to 39,608.40, 59,315.40 and 26,389.20 is: 39,519.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,608.40 : 59,315.40 = 26,389.20 : x
  2. Step 2: Convert to fraction form
    39,608.40/59,315.40 = 26,389.20/x
  3. Step 3: Cross multiply
    39,608.40x = 59,315.40 × 26,389.20
  4. Step 4: Simplify right side
    39,608.40x = 1,565,285,953.68
  5. Step 5: Solve for x
    x = 1,565,285,953.68/39,608.40
  6. Step 6: Final answer
    x = 39,519.04

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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.