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Finding the Fourth Proportional to 419,018.54, 578,258.70 and 237,738.11

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Solution

The fourth proportional to 419,018.54, 578,258.70 and 237,738.11 is: 328,086.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,018.54 : 578,258.70 = 237,738.11 : x
  2. Step 2: Convert to fraction form
    419,018.54/578,258.70 = 237,738.11/x
  3. Step 3: Cross multiply
    419,018.54x = 578,258.70 × 237,738.11
  4. Step 4: Simplify right side
    419,018.54x = 137,474,126,646.25
  5. Step 5: Solve for x
    x = 137,474,126,646.25/419,018.54
  6. Step 6: Final answer
    x = 328,086.03

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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.