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Finding the Fourth Proportional to 31,790.40, 47,644.80 and 17,750.40

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Solution

The fourth proportional to 31,790.40, 47,644.80 and 17,750.40 is: 26,602.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,790.40 : 47,644.80 = 17,750.40 : x
  2. Step 2: Convert to fraction form
    31,790.40/47,644.80 = 17,750.40/x
  3. Step 3: Cross multiply
    31,790.40x = 47,644.80 × 17,750.40
  4. Step 4: Simplify right side
    31,790.40x = 845,714,257.92
  5. Step 5: Solve for x
    x = 845,714,257.92/31,790.40
  6. Step 6: Final answer
    x = 26,602.82

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.