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Finding the Fourth Proportional to 225,808.94, 311,630.20 and 125,206.94

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Solution

The fourth proportional to 225,808.94, 311,630.20 and 125,206.94 is: 172,793.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,808.94 : 311,630.20 = 125,206.94 : x
  2. Step 2: Convert to fraction form
    225,808.94/311,630.20 = 125,206.94/x
  3. Step 3: Cross multiply
    225,808.94x = 311,630.20 × 125,206.94
  4. Step 4: Simplify right side
    225,808.94x = 39,018,263,753.59
  5. Step 5: Solve for x
    x = 39,018,263,753.59/225,808.94
  6. Step 6: Final answer
    x = 172,793.26

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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.