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Finding the Fourth Proportional to 668,662.96, 922,512.73 and 439,343.76

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Solution

The fourth proportional to 668,662.96, 922,512.73 and 439,343.76 is: 606,135.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,662.96 : 922,512.73 = 439,343.76 : x
  2. Step 2: Convert to fraction form
    668,662.96/922,512.73 = 439,343.76/x
  3. Step 3: Cross multiply
    668,662.96x = 922,512.73 × 439,343.76
  4. Step 4: Simplify right side
    668,662.96x = 405,300,209,249.35
  5. Step 5: Solve for x
    x = 405,300,209,249.35/668,662.96
  6. Step 6: Final answer
    x = 606,135.28

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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.