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Finding the Fourth Proportional to 85,676.49, 118,287.15 and 55,062

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Solution

The fourth proportional to 85,676.49, 118,287.15 and 55,062 is: 76,020.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,676.49 : 118,287.15 = 55,062 : x
  2. Step 2: Convert to fraction form
    85,676.49/118,287.15 = 55,062/x
  3. Step 3: Cross multiply
    85,676.49x = 118,287.15 × 55,062
  4. Step 4: Simplify right side
    85,676.49x = 6,513,127,053.30
  5. Step 5: Solve for x
    x = 6,513,127,053.30/85,676.49
  6. Step 6: Final answer
    x = 76,020.00

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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.