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Finding the Fourth Proportional to 31,128.96, 46,425.48 and 26,478.48

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Solution

The fourth proportional to 31,128.96, 46,425.48 and 26,478.48 is: 39,489.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,128.96 : 46,425.48 = 26,478.48 : x
  2. Step 2: Convert to fraction form
    31,128.96/46,425.48 = 26,478.48/x
  3. Step 3: Cross multiply
    31,128.96x = 46,425.48 × 26,478.48
  4. Step 4: Simplify right side
    31,128.96x = 1,229,276,143.67
  5. Step 5: Solve for x
    x = 1,229,276,143.67/31,128.96
  6. Step 6: Final answer
    x = 39,489.79

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.