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Finding the Fourth Proportional to 181,962.99, 251,105.54 and 101,388.78

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Solution

The fourth proportional to 181,962.99, 251,105.54 and 101,388.78 is: 139,914.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,962.99 : 251,105.54 = 101,388.78 : x
  2. Step 2: Convert to fraction form
    181,962.99/251,105.54 = 101,388.78/x
  3. Step 3: Cross multiply
    181,962.99x = 251,105.54 × 101,388.78
  4. Step 4: Simplify right side
    181,962.99x = 25,459,283,844.90
  5. Step 5: Solve for x
    x = 25,459,283,844.90/181,962.99
  6. Step 6: Final answer
    x = 139,914.63

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1.5x scale

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.