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Finding the Fourth Proportional to 103,786.75, 155,680.13 and 33,666.07

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Solution

The fourth proportional to 103,786.75, 155,680.13 and 33,666.07 is: 50,499.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,786.75 : 155,680.13 = 33,666.07 : x
  2. Step 2: Convert to fraction form
    103,786.75/155,680.13 = 33,666.07/x
  3. Step 3: Cross multiply
    103,786.75x = 155,680.13 × 33,666.07
  4. Step 4: Simplify right side
    103,786.75x = 5,241,138,154.19
  5. Step 5: Solve for x
    x = 5,241,138,154.19/103,786.75
  6. Step 6: Final answer
    x = 50,499.11

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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.