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Finding the Fourth Proportional to 188,136.84, 282,291.66 and 81,553.32

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Solution

The fourth proportional to 188,136.84, 282,291.66 and 81,553.32 is: 122,367.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,136.84 : 282,291.66 = 81,553.32 : x
  2. Step 2: Convert to fraction form
    188,136.84/282,291.66 = 81,553.32/x
  3. Step 3: Cross multiply
    188,136.84x = 282,291.66 × 81,553.32
  4. Step 4: Simplify right side
    188,136.84x = 23,021,822,081.31
  5. Step 5: Solve for x
    x = 23,021,822,081.31/188,136.84
  6. Step 6: Final answer
    x = 122,367.43

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1.5x scale

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.