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Finding the Fourth Proportional to 41,007.70, 61,513.98 and 12,928.65

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Solution

The fourth proportional to 41,007.70, 61,513.98 and 12,928.65 is: 19,393.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,007.70 : 61,513.98 = 12,928.65 : x
  2. Step 2: Convert to fraction form
    41,007.70/61,513.98 = 12,928.65/x
  3. Step 3: Cross multiply
    41,007.70x = 61,513.98 × 12,928.65
  4. Step 4: Simplify right side
    41,007.70x = 795,292,717.53
  5. Step 5: Solve for x
    x = 795,292,717.53/41,007.70
  6. Step 6: Final answer
    x = 19,393.74

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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.