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Finding the Fourth Proportional to 613,301.82, 845,997.78 and 398,584.92

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Solution

The fourth proportional to 613,301.82, 845,997.78 and 398,584.92 is: 549,814.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,301.82 : 845,997.78 = 398,584.92 : x
  2. Step 2: Convert to fraction form
    613,301.82/845,997.78 = 398,584.92/x
  3. Step 3: Cross multiply
    613,301.82x = 845,997.78 × 398,584.92
  4. Step 4: Simplify right side
    613,301.82x = 337,201,957,461.48
  5. Step 5: Solve for x
    x = 337,201,957,461.48/613,301.82
  6. Step 6: Final answer
    x = 549,814.05

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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.