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Finding the Fourth Proportional to 31,411.60, 47,232.60 and 26,342.80

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Solution

The fourth proportional to 31,411.60, 47,232.60 and 26,342.80 is: 39,610.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,411.60 : 47,232.60 = 26,342.80 : x
  2. Step 2: Convert to fraction form
    31,411.60/47,232.60 = 26,342.80/x
  3. Step 3: Cross multiply
    31,411.60x = 47,232.60 × 26,342.80
  4. Step 4: Simplify right side
    31,411.60x = 1,244,238,935.28
  5. Step 5: Solve for x
    x = 1,244,238,935.28/31,411.60
  6. Step 6: Final answer
    x = 39,610.81

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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.