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Finding the Fourth Proportional to 124,409.57, 171,684.81 and 67,820.94

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Solution

The fourth proportional to 124,409.57, 171,684.81 and 67,820.94 is: 93,592.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,409.57 : 171,684.81 = 67,820.94 : x
  2. Step 2: Convert to fraction form
    124,409.57/171,684.81 = 67,820.94/x
  3. Step 3: Cross multiply
    124,409.57x = 171,684.81 × 67,820.94
  4. Step 4: Simplify right side
    124,409.57x = 11,643,825,197.92
  5. Step 5: Solve for x
    x = 11,643,825,197.92/124,409.57
  6. Step 6: Final answer
    x = 93,592.68

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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.