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Finding the Fourth Proportional to 378,959.13, 567,945.09 and 154,056.87

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Solution

The fourth proportional to 378,959.13, 567,945.09 and 154,056.87 is: 230,884.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,959.13 : 567,945.09 = 154,056.87 : x
  2. Step 2: Convert to fraction form
    378,959.13/567,945.09 = 154,056.87/x
  3. Step 3: Cross multiply
    378,959.13x = 567,945.09 × 154,056.87
  4. Step 4: Simplify right side
    378,959.13x = 87,495,842,897.27
  5. Step 5: Solve for x
    x = 87,495,842,897.27/378,959.13
  6. Step 6: Final answer
    x = 230,884.64

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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.