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Finding the Fourth Proportional to 341,339.50, 512,009.28 and 92,021.50

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Solution

The fourth proportional to 341,339.50, 512,009.28 and 92,021.50 is: 138,032.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,339.50 : 512,009.28 = 92,021.50 : x
  2. Step 2: Convert to fraction form
    341,339.50/512,009.28 = 92,021.50/x
  3. Step 3: Cross multiply
    341,339.50x = 512,009.28 × 92,021.50
  4. Step 4: Simplify right side
    341,339.50x = 47,115,861,959.52
  5. Step 5: Solve for x
    x = 47,115,861,959.52/341,339.50
  6. Step 6: Final answer
    x = 138,032.26

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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.