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Finding the Fourth Proportional to 124,242.12, 171,456.12 and 67,653.48

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Solution

The fourth proportional to 124,242.12, 171,456.12 and 67,653.48 is: 93,362.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,242.12 : 171,456.12 = 67,653.48 : x
  2. Step 2: Convert to fraction form
    124,242.12/171,456.12 = 67,653.48/x
  3. Step 3: Cross multiply
    124,242.12x = 171,456.12 × 67,653.48
  4. Step 4: Simplify right side
    124,242.12x = 11,599,603,185.30
  5. Step 5: Solve for x
    x = 11,599,603,185.30/124,242.12
  6. Step 6: Final answer
    x = 93,362.89

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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.