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Finding the Fourth Proportional to 119,699.11, 165,138.51 and 68,693.41

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Solution

The fourth proportional to 119,699.11, 165,138.51 and 68,693.41 is: 94,770.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,699.11 : 165,138.51 = 68,693.41 : x
  2. Step 2: Convert to fraction form
    119,699.11/165,138.51 = 68,693.41/x
  3. Step 3: Cross multiply
    119,699.11x = 165,138.51 × 68,693.41
  4. Step 4: Simplify right side
    119,699.11x = 11,343,927,374.22
  5. Step 5: Solve for x
    x = 11,343,927,374.22/119,699.11
  6. Step 6: Final answer
    x = 94,770.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.