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Finding the Fourth Proportional to 122,149.59, 168,576.30 and 68,446.59

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Solution

The fourth proportional to 122,149.59, 168,576.30 and 68,446.59 is: 94,461.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,149.59 : 168,576.30 = 68,446.59 : x
  2. Step 2: Convert to fraction form
    122,149.59/168,576.30 = 68,446.59/x
  3. Step 3: Cross multiply
    122,149.59x = 168,576.30 × 68,446.59
  4. Step 4: Simplify right side
    122,149.59x = 11,538,472,889.82
  5. Step 5: Solve for x
    x = 11,538,472,889.82/122,149.59
  6. Step 6: Final answer
    x = 94,461.82

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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.