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Finding the Fourth Proportional to 119,699.61, 165,139.20 and 68,693.91

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Solution

The fourth proportional to 119,699.61, 165,139.20 and 68,693.91 is: 94,771.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,699.61 : 165,139.20 = 68,693.91 : x
  2. Step 2: Convert to fraction form
    119,699.61/165,139.20 = 68,693.91/x
  3. Step 3: Cross multiply
    119,699.61x = 165,139.20 × 68,693.91
  4. Step 4: Simplify right side
    119,699.61x = 11,344,057,342.27
  5. Step 5: Solve for x
    x = 11,344,057,342.27/119,699.61
  6. Step 6: Final answer
    x = 94,771.05

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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.