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Finding the Fourth Proportional to 450,805.48, 622,111.82 and 281,040.28

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Solution

The fourth proportional to 450,805.48, 622,111.82 and 281,040.28 is: 387,835.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,805.48 : 622,111.82 = 281,040.28 : x
  2. Step 2: Convert to fraction form
    450,805.48/622,111.82 = 281,040.28/x
  3. Step 3: Cross multiply
    450,805.48x = 622,111.82 × 281,040.28
  4. Step 4: Simplify right side
    450,805.48x = 174,838,480,084.11
  5. Step 5: Solve for x
    x = 174,838,480,084.11/450,805.48
  6. Step 6: Final answer
    x = 387,835.75

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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.