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Finding the Fourth Proportional to 276,807, 415,239.66 and 127,021.80

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Solution

The fourth proportional to 276,807, 415,239.66 and 127,021.80 is: 190,546.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,807 : 415,239.66 = 127,021.80 : x
  2. Step 2: Convert to fraction form
    276,807/415,239.66 = 127,021.80/x
  3. Step 3: Cross multiply
    276,807x = 415,239.66 × 127,021.80
  4. Step 4: Simplify right side
    276,807x = 52,744,489,044.59
  5. Step 5: Solve for x
    x = 52,744,489,044.59/276,807
  6. Step 6: Final answer
    x = 190,546.08

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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.