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Finding the Fourth Proportional to 328,996.16, 453,987.36 and 193,015.88

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Solution

The fourth proportional to 328,996.16, 453,987.36 and 193,015.88 is: 266,345.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,996.16 : 453,987.36 = 193,015.88 : x
  2. Step 2: Convert to fraction form
    328,996.16/453,987.36 = 193,015.88/x
  3. Step 3: Cross multiply
    328,996.16x = 453,987.36 × 193,015.88
  4. Step 4: Simplify right side
    328,996.16x = 87,626,769,799.28
  5. Step 5: Solve for x
    x = 87,626,769,799.28/328,996.16
  6. Step 6: Final answer
    x = 266,345.87

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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.