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Finding the Fourth Proportional to 136,673.13, 205,018.34 and 57,776.97

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Solution

The fourth proportional to 136,673.13, 205,018.34 and 57,776.97 is: 86,669.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,673.13 : 205,018.34 = 57,776.97 : x
  2. Step 2: Convert to fraction form
    136,673.13/205,018.34 = 57,776.97/x
  3. Step 3: Cross multiply
    136,673.13x = 205,018.34 × 57,776.97
  4. Step 4: Simplify right side
    136,673.13x = 11,845,338,190.75
  5. Step 5: Solve for x
    x = 11,845,338,190.75/136,673.13
  6. Step 6: Final answer
    x = 86,669.11

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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.