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Finding the Fourth Proportional to 415,068.93, 622,603.56 and 320,437.27

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Solution

The fourth proportional to 415,068.93, 622,603.56 and 320,437.27 is: 480,656.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,068.93 : 622,603.56 = 320,437.27 : x
  2. Step 2: Convert to fraction form
    415,068.93/622,603.56 = 320,437.27/x
  3. Step 3: Cross multiply
    415,068.93x = 622,603.56 × 320,437.27
  4. Step 4: Simplify right side
    415,068.93x = 199,505,385,058.68
  5. Step 5: Solve for x
    x = 199,505,385,058.68/415,068.93
  6. Step 6: Final answer
    x = 480,656.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.