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Finding the Fourth Proportional to 355,412.52, 533,212.26 and 127,731.14

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Solution

The fourth proportional to 355,412.52, 533,212.26 and 127,731.14 is: 191,630.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,412.52 : 533,212.26 = 127,731.14 : x
  2. Step 2: Convert to fraction form
    355,412.52/533,212.26 = 127,731.14/x
  3. Step 3: Cross multiply
    355,412.52x = 533,212.26 × 127,731.14
  4. Step 4: Simplify right side
    355,412.52x = 68,107,809,831.78
  5. Step 5: Solve for x
    x = 68,107,809,831.78/355,412.52
  6. Step 6: Final answer
    x = 191,630.31

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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.