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Finding the Fourth Proportional to 439,958.89, 606,829.57 and 403,776.91

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Solution

The fourth proportional to 439,958.89, 606,829.57 and 403,776.91 is: 556,924.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,958.89 : 606,829.57 = 403,776.91 : x
  2. Step 2: Convert to fraction form
    439,958.89/606,829.57 = 403,776.91/x
  3. Step 3: Cross multiply
    439,958.89x = 606,829.57 × 403,776.91
  4. Step 4: Simplify right side
    439,958.89x = 245,023,766,144.71
  5. Step 5: Solve for x
    x = 245,023,766,144.71/439,958.89
  6. Step 6: Final answer
    x = 556,924.23

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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.