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Finding the Fourth Proportional to 122,468.40, 169,004.89 and 68,752.03

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Solution

The fourth proportional to 122,468.40, 169,004.89 and 68,752.03 is: 94,876.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,468.40 : 169,004.89 = 68,752.03 : x
  2. Step 2: Convert to fraction form
    122,468.40/169,004.89 = 68,752.03/x
  3. Step 3: Cross multiply
    122,468.40x = 169,004.89 × 68,752.03
  4. Step 4: Simplify right side
    122,468.40x = 11,619,429,267.43
  5. Step 5: Solve for x
    x = 11,619,429,267.43/122,468.40
  6. Step 6: Final answer
    x = 94,876.96

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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.