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Finding the Fourth Proportional to 629,408.51, 868,572.78 and 342,930.68

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Solution

The fourth proportional to 629,408.51, 868,572.78 and 342,930.68 is: 473,238.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,408.51 : 868,572.78 = 342,930.68 : x
  2. Step 2: Convert to fraction form
    629,408.51/868,572.78 = 342,930.68/x
  3. Step 3: Cross multiply
    629,408.51x = 868,572.78 × 342,930.68
  4. Step 4: Simplify right side
    629,408.51x = 297,860,254,074.89
  5. Step 5: Solve for x
    x = 297,860,254,074.89/629,408.51
  6. Step 6: Final answer
    x = 473,238.36

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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.