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Finding the Fourth Proportional to 188,504.34, 260,136.27 and 103,621.92

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Solution

The fourth proportional to 188,504.34, 260,136.27 and 103,621.92 is: 142,998.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,504.34 : 260,136.27 = 103,621.92 : x
  2. Step 2: Convert to fraction form
    188,504.34/260,136.27 = 103,621.92/x
  3. Step 3: Cross multiply
    188,504.34x = 260,136.27 × 103,621.92
  4. Step 4: Simplify right side
    188,504.34x = 26,955,819,759.04
  5. Step 5: Solve for x
    x = 26,955,819,759.04/188,504.34
  6. Step 6: Final answer
    x = 142,998.40

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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.