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Finding the Fourth Proportional to 127,911.72, 191,907.54 and 43,673.88

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Solution

The fourth proportional to 127,911.72, 191,907.54 and 43,673.88 is: 65,524.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,911.72 : 191,907.54 = 43,673.88 : x
  2. Step 2: Convert to fraction form
    127,911.72/191,907.54 = 43,673.88/x
  3. Step 3: Cross multiply
    127,911.72x = 191,907.54 × 43,673.88
  4. Step 4: Simplify right side
    127,911.72x = 8,381,346,873.06
  5. Step 5: Solve for x
    x = 8,381,346,873.06/127,911.72
  6. Step 6: Final answer
    x = 65,524.46

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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.