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Finding the Fourth Proportional to 127,204.34, 190,810.56 and 63,989.92

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Solution

The fourth proportional to 127,204.34, 190,810.56 and 63,989.92 is: 95,986.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,204.34 : 190,810.56 = 63,989.92 : x
  2. Step 2: Convert to fraction form
    127,204.34/190,810.56 = 63,989.92/x
  3. Step 3: Cross multiply
    127,204.34x = 190,810.56 × 63,989.92
  4. Step 4: Simplify right side
    127,204.34x = 12,209,951,992.53
  5. Step 5: Solve for x
    x = 12,209,951,992.53/127,204.34
  6. Step 6: Final answer
    x = 95,986.91

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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.