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Finding the Fourth Proportional to 622,997.94, 860,110.65 and 408,512.10

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Solution

The fourth proportional to 622,997.94, 860,110.65 and 408,512.10 is: 563,991.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,997.94 : 860,110.65 = 408,512.10 : x
  2. Step 2: Convert to fraction form
    622,997.94/860,110.65 = 408,512.10/x
  3. Step 3: Cross multiply
    622,997.94x = 860,110.65 × 408,512.10
  4. Step 4: Simplify right side
    622,997.94x = 351,365,607,863.87
  5. Step 5: Solve for x
    x = 351,365,607,863.87/622,997.94
  6. Step 6: Final answer
    x = 563,991.60

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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.