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Finding the Fourth Proportional to 548,341.14, 756,781.20 and 306,637.20

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Solution

The fourth proportional to 548,341.14, 756,781.20 and 306,637.20 is: 423,198.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,341.14 : 756,781.20 = 306,637.20 : x
  2. Step 2: Convert to fraction form
    548,341.14/756,781.20 = 306,637.20/x
  3. Step 3: Cross multiply
    548,341.14x = 756,781.20 × 306,637.20
  4. Step 4: Simplify right side
    548,341.14x = 232,057,268,180.64
  5. Step 5: Solve for x
    x = 232,057,268,180.64/548,341.14
  6. Step 6: Final answer
    x = 423,198.72

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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.