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Finding the Fourth Proportional to 341,996.78, 512,995.30 and 89,276.56

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Solution

The fourth proportional to 341,996.78, 512,995.30 and 89,276.56 is: 133,914.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,996.78 : 512,995.30 = 89,276.56 : x
  2. Step 2: Convert to fraction form
    341,996.78/512,995.30 = 89,276.56/x
  3. Step 3: Cross multiply
    341,996.78x = 512,995.30 × 89,276.56
  4. Step 4: Simplify right side
    341,996.78x = 45,798,455,680.17
  5. Step 5: Solve for x
    x = 45,798,455,680.17/341,996.78
  6. Step 6: Final answer
    x = 133,914.87

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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.