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Finding the Fourth Proportional to 423,705.66, 584,571.51 and 239,919.18

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Solution

The fourth proportional to 423,705.66, 584,571.51 and 239,919.18 is: 331,007.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,705.66 : 584,571.51 = 239,919.18 : x
  2. Step 2: Convert to fraction form
    423,705.66/584,571.51 = 239,919.18/x
  3. Step 3: Cross multiply
    423,705.66x = 584,571.51 × 239,919.18
  4. Step 4: Simplify right side
    423,705.66x = 140,249,917,330.56
  5. Step 5: Solve for x
    x = 140,249,917,330.56/423,705.66
  6. Step 6: Final answer
    x = 331,007.89

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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.