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Finding the Fourth Proportional to 31,989.78, 44,147.90 and 17,842.59

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Solution

The fourth proportional to 31,989.78, 44,147.90 and 17,842.59 is: 24,623.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,989.78 : 44,147.90 = 17,842.59 : x
  2. Step 2: Convert to fraction form
    31,989.78/44,147.90 = 17,842.59/x
  3. Step 3: Cross multiply
    31,989.78x = 44,147.90 × 17,842.59
  4. Step 4: Simplify right side
    31,989.78x = 787,712,923.67
  5. Step 5: Solve for x
    x = 787,712,923.67/31,989.78
  6. Step 6: Final answer
    x = 24,623.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.