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Finding the Fourth Proportional to 199,412.05, 299,174.59 and 81,168.25

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Solution

The fourth proportional to 199,412.05, 299,174.59 and 81,168.25 is: 121,775.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,412.05 : 299,174.59 = 81,168.25 : x
  2. Step 2: Convert to fraction form
    199,412.05/299,174.59 = 81,168.25/x
  3. Step 3: Cross multiply
    199,412.05x = 299,174.59 × 81,168.25
  4. Step 4: Simplify right side
    199,412.05x = 24,283,476,013.05
  5. Step 5: Solve for x
    x = 24,283,476,013.05/199,412.05
  6. Step 6: Final answer
    x = 121,775.37

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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.