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Finding the Fourth Proportional to 133,084.69, 199,661.60 and 66,522.13

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Solution

The fourth proportional to 133,084.69, 199,661.60 and 66,522.13 is: 99,800.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,084.69 : 199,661.60 = 66,522.13 : x
  2. Step 2: Convert to fraction form
    133,084.69/199,661.60 = 66,522.13/x
  3. Step 3: Cross multiply
    133,084.69x = 199,661.60 × 66,522.13
  4. Step 4: Simplify right side
    133,084.69x = 13,281,914,911.21
  5. Step 5: Solve for x
    x = 13,281,914,911.21/133,084.69
  6. Step 6: Final answer
    x = 99,800.47

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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.