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Finding the Fourth Proportional to 122,476.59, 169,004.61 and 68,767.50

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Solution

The fourth proportional to 122,476.59, 169,004.61 and 68,767.50 is: 94,891.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,476.59 : 169,004.61 = 68,767.50 : x
  2. Step 2: Convert to fraction form
    122,476.59/169,004.61 = 68,767.50/x
  3. Step 3: Cross multiply
    122,476.59x = 169,004.61 × 68,767.50
  4. Step 4: Simplify right side
    122,476.59x = 11,622,024,518.18
  5. Step 5: Solve for x
    x = 11,622,024,518.18/122,476.59
  6. Step 6: Final answer
    x = 94,891.80

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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.