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Finding the Fourth Proportional to 406,379.91, 561,078.30 and 253,650.76

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Solution

The fourth proportional to 406,379.91, 561,078.30 and 253,650.76 is: 350,209.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,379.91 : 561,078.30 = 253,650.76 : x
  2. Step 2: Convert to fraction form
    406,379.91/561,078.30 = 253,650.76/x
  3. Step 3: Cross multiply
    406,379.91x = 561,078.30 × 253,650.76
  4. Step 4: Simplify right side
    406,379.91x = 142,317,937,214.51
  5. Step 5: Solve for x
    x = 142,317,937,214.51/406,379.91
  6. Step 6: Final answer
    x = 350,209.09

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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.