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Finding the Fourth Proportional to 127,860.51, 191,846.17 and 68,626.97

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Solution

The fourth proportional to 127,860.51, 191,846.17 and 68,626.97 is: 102,970.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,860.51 : 191,846.17 = 68,626.97 : x
  2. Step 2: Convert to fraction form
    127,860.51/191,846.17 = 68,626.97/x
  3. Step 3: Cross multiply
    127,860.51x = 191,846.17 × 68,626.97
  4. Step 4: Simplify right side
    127,860.51x = 13,165,821,199.18
  5. Step 5: Solve for x
    x = 13,165,821,199.18/127,860.51
  6. Step 6: Final answer
    x = 102,970.19

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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.