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Finding the Fourth Proportional to 119,068.66, 164,289.09 and 68,738.50

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Solution

The fourth proportional to 119,068.66, 164,289.09 and 68,738.50 is: 94,844.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,068.66 : 164,289.09 = 68,738.50 : x
  2. Step 2: Convert to fraction form
    119,068.66/164,289.09 = 68,738.50/x
  3. Step 3: Cross multiply
    119,068.66x = 164,289.09 × 68,738.50
  4. Step 4: Simplify right side
    119,068.66x = 11,292,985,612.97
  5. Step 5: Solve for x
    x = 11,292,985,612.97/119,068.66
  6. Step 6: Final answer
    x = 94,844.32

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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.