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Finding the Fourth Proportional to 122,460.57, 168,995.50 and 68,745.69

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Solution

The fourth proportional to 122,460.57, 168,995.50 and 68,745.69 is: 94,869.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,460.57 : 168,995.50 = 68,745.69 : x
  2. Step 2: Convert to fraction form
    122,460.57/168,995.50 = 68,745.69/x
  3. Step 3: Cross multiply
    122,460.57x = 168,995.50 × 68,745.69
  4. Step 4: Simplify right side
    122,460.57x = 11,617,712,254.40
  5. Step 5: Solve for x
    x = 11,617,712,254.40/122,460.57
  6. Step 6: Final answer
    x = 94,869.00

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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.