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Finding the Fourth Proportional to 406,611.75, 561,136.52 and 225,306.72

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Solution

The fourth proportional to 406,611.75, 561,136.52 and 225,306.72 is: 310,930.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,611.75 : 561,136.52 = 225,306.72 : x
  2. Step 2: Convert to fraction form
    406,611.75/561,136.52 = 225,306.72/x
  3. Step 3: Cross multiply
    406,611.75x = 561,136.52 × 225,306.72
  4. Step 4: Simplify right side
    406,611.75x = 126,427,827,666.88
  5. Step 5: Solve for x
    x = 126,427,827,666.88/406,611.75
  6. Step 6: Final answer
    x = 310,930.09

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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.