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Finding the Fourth Proportional to 122,364.76, 168,853.44 and 68,642.32

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Solution

The fourth proportional to 122,364.76, 168,853.44 and 68,642.32 is: 94,720.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,364.76 : 168,853.44 = 68,642.32 : x
  2. Step 2: Convert to fraction form
    122,364.76/168,853.44 = 68,642.32/x
  3. Step 3: Cross multiply
    122,364.76x = 168,853.44 × 68,642.32
  4. Step 4: Simplify right side
    122,364.76x = 11,590,491,861.58
  5. Step 5: Solve for x
    x = 11,590,491,861.58/122,364.76
  6. Step 6: Final answer
    x = 94,720.83

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1.5x scale

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.