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Finding the Fourth Proportional to 403,620.54, 556,999.18 and 231,546.01

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Solution

The fourth proportional to 403,620.54, 556,999.18 and 231,546.01 is: 319,535.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,620.54 : 556,999.18 = 231,546.01 : x
  2. Step 2: Convert to fraction form
    403,620.54/556,999.18 = 231,546.01/x
  3. Step 3: Cross multiply
    403,620.54x = 556,999.18 × 231,546.01
  4. Step 4: Simplify right side
    403,620.54x = 128,970,938,077.73
  5. Step 5: Solve for x
    x = 128,970,938,077.73/403,620.54
  6. Step 6: Final answer
    x = 319,535.12

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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.