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Finding the Fourth Proportional to 124,605.90, 171,956.40 and 68,017.26

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Solution

The fourth proportional to 124,605.90, 171,956.40 and 68,017.26 is: 93,863.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,605.90 : 171,956.40 = 68,017.26 : x
  2. Step 2: Convert to fraction form
    124,605.90/171,956.40 = 68,017.26/x
  3. Step 3: Cross multiply
    124,605.90x = 171,956.40 × 68,017.26
  4. Step 4: Simplify right side
    124,605.90x = 11,696,003,167.46
  5. Step 5: Solve for x
    x = 11,696,003,167.46/124,605.90
  6. Step 6: Final answer
    x = 93,863.96

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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.