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Finding the Fourth Proportional to 469,297.92, 648,165.69 and 318,132.48

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Solution

The fourth proportional to 469,297.92, 648,165.69 and 318,132.48 is: 439,385.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,297.92 : 648,165.69 = 318,132.48 : x
  2. Step 2: Convert to fraction form
    469,297.92/648,165.69 = 318,132.48/x
  3. Step 3: Cross multiply
    469,297.92x = 648,165.69 × 318,132.48
  4. Step 4: Simplify right side
    469,297.92x = 206,202,558,410.61
  5. Step 5: Solve for x
    x = 206,202,558,410.61/469,297.92
  6. Step 6: Final answer
    x = 439,385.20

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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.