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Finding the Fourth Proportional to 372,953.72, 515,238.54 and 301,209.20

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Solution

The fourth proportional to 372,953.72, 515,238.54 and 301,209.20 is: 416,122.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,953.72 : 515,238.54 = 301,209.20 : x
  2. Step 2: Convert to fraction form
    372,953.72/515,238.54 = 301,209.20/x
  3. Step 3: Cross multiply
    372,953.72x = 515,238.54 × 301,209.20
  4. Step 4: Simplify right side
    372,953.72x = 155,194,588,442.57
  5. Step 5: Solve for x
    x = 155,194,588,442.57/372,953.72
  6. Step 6: Final answer
    x = 416,122.91

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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.