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Finding the Fourth Proportional to 122,995.45, 169,672.48 and 82,710.91

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Solution

The fourth proportional to 122,995.45, 169,672.48 and 82,710.91 is: 114,099.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,995.45 : 169,672.48 = 82,710.91 : x
  2. Step 2: Convert to fraction form
    122,995.45/169,672.48 = 82,710.91/x
  3. Step 3: Cross multiply
    122,995.45x = 169,672.48 × 82,710.91
  4. Step 4: Simplify right side
    122,995.45x = 14,033,765,222.76
  5. Step 5: Solve for x
    x = 14,033,765,222.76/122,995.45
  6. Step 6: Final answer
    x = 114,099.87

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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.