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Finding the Fourth Proportional to 406,673.67, 561,209.72 and 225,397.30

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Solution

The fourth proportional to 406,673.67, 561,209.72 and 225,397.30 is: 311,048.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,673.67 : 561,209.72 = 225,397.30 : x
  2. Step 2: Convert to fraction form
    406,673.67/561,209.72 = 225,397.30/x
  3. Step 3: Cross multiply
    406,673.67x = 561,209.72 × 225,397.30
  4. Step 4: Simplify right side
    406,673.67x = 126,495,156,197.86
  5. Step 5: Solve for x
    x = 126,495,156,197.86/406,673.67
  6. Step 6: Final answer
    x = 311,048.31

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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.