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Finding the Fourth Proportional to 104,409.69, 143,976.46 and 61,960.02

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Solution

The fourth proportional to 104,409.69, 143,976.46 and 61,960.02 is: 85,440.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,409.69 : 143,976.46 = 61,960.02 : x
  2. Step 2: Convert to fraction form
    104,409.69/143,976.46 = 61,960.02/x
  3. Step 3: Cross multiply
    104,409.69x = 143,976.46 × 61,960.02
  4. Step 4: Simplify right side
    104,409.69x = 8,920,784,746.62
  5. Step 5: Solve for x
    x = 8,920,784,746.62/104,409.69
  6. Step 6: Final answer
    x = 85,440.20

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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.