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Finding the Fourth Proportional to 127,696.55, 176,065.09 and 79,866.86

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Solution

The fourth proportional to 127,696.55, 176,065.09 and 79,866.86 is: 110,118.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,696.55 : 176,065.09 = 79,866.86 : x
  2. Step 2: Convert to fraction form
    127,696.55/176,065.09 = 79,866.86/x
  3. Step 3: Cross multiply
    127,696.55x = 176,065.09 × 79,866.86
  4. Step 4: Simplify right side
    127,696.55x = 14,061,764,813.92
  5. Step 5: Solve for x
    x = 14,061,764,813.92/127,696.55
  6. Step 6: Final answer
    x = 110,118.60

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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.