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Finding the Fourth Proportional to 119,330.31, 164,676.42 and 65,618.79

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Solution

The fourth proportional to 119,330.31, 164,676.42 and 65,618.79 is: 90,554.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,330.31 : 164,676.42 = 65,618.79 : x
  2. Step 2: Convert to fraction form
    119,330.31/164,676.42 = 65,618.79/x
  3. Step 3: Cross multiply
    119,330.31x = 164,676.42 × 65,618.79
  4. Step 4: Simplify right side
    119,330.31x = 10,805,867,421.93
  5. Step 5: Solve for x
    x = 10,805,867,421.93/119,330.31
  6. Step 6: Final answer
    x = 90,554.26

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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.