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Finding the Fourth Proportional to 126,951.71, 175,136.99 and 81,621.27

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Solution

The fourth proportional to 126,951.71, 175,136.99 and 81,621.27 is: 112,601.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,951.71 : 175,136.99 = 81,621.27 : x
  2. Step 2: Convert to fraction form
    126,951.71/175,136.99 = 81,621.27/x
  3. Step 3: Cross multiply
    126,951.71x = 175,136.99 × 81,621.27
  4. Step 4: Simplify right side
    126,951.71x = 14,294,903,139.67
  5. Step 5: Solve for x
    x = 14,294,903,139.67/126,951.71
  6. Step 6: Final answer
    x = 112,601.11

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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.