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Finding the Fourth Proportional to 472,811.40, 709,217.10 and 236,190.60

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Solution

The fourth proportional to 472,811.40, 709,217.10 and 236,190.60 is: 354,285.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,811.40 : 709,217.10 = 236,190.60 : x
  2. Step 2: Convert to fraction form
    472,811.40/709,217.10 = 236,190.60/x
  3. Step 3: Cross multiply
    472,811.40x = 709,217.10 × 236,190.60
  4. Step 4: Simplify right side
    472,811.40x = 167,510,412,379.26
  5. Step 5: Solve for x
    x = 167,510,412,379.26/472,811.40
  6. Step 6: Final answer
    x = 354,285.90

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.