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Finding the Fourth Proportional to 61,289.96, 91,934.94 and 16,915.24

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Solution

The fourth proportional to 61,289.96, 91,934.94 and 16,915.24 is: 25,372.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,289.96 : 91,934.94 = 16,915.24 : x
  2. Step 2: Convert to fraction form
    61,289.96/91,934.94 = 16,915.24/x
  3. Step 3: Cross multiply
    61,289.96x = 91,934.94 × 16,915.24
  4. Step 4: Simplify right side
    61,289.96x = 1,555,101,574.49
  5. Step 5: Solve for x
    x = 1,555,101,574.49/61,289.96
  6. Step 6: Final answer
    x = 25,372.86

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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.