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Finding the Fourth Proportional to 411,911.07, 568,144.11 and 378,028.89

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Solution

The fourth proportional to 411,911.07, 568,144.11 and 378,028.89 is: 521,410.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,911.07 : 568,144.11 = 378,028.89 : x
  2. Step 2: Convert to fraction form
    411,911.07/568,144.11 = 378,028.89/x
  3. Step 3: Cross multiply
    411,911.07x = 568,144.11 × 378,028.89
  4. Step 4: Simplify right side
    411,911.07x = 214,774,887,263.34
  5. Step 5: Solve for x
    x = 214,774,887,263.34/411,911.07
  6. Step 6: Final answer
    x = 521,410.82

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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.