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Finding the Fourth Proportional to 127,894.89, 191,859.84 and 43,632.43

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Solution

The fourth proportional to 127,894.89, 191,859.84 and 43,632.43 is: 65,454.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,894.89 : 191,859.84 = 43,632.43 : x
  2. Step 2: Convert to fraction form
    127,894.89/191,859.84 = 43,632.43/x
  3. Step 3: Cross multiply
    127,894.89x = 191,859.84 × 43,632.43
  4. Step 4: Simplify right side
    127,894.89x = 8,371,311,038.61
  5. Step 5: Solve for x
    x = 8,371,311,038.61/127,894.89
  6. Step 6: Final answer
    x = 65,454.62

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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.