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Finding the Fourth Proportional to 671,546.80, 1,008,097.80 and 405,607.60

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Solution

The fourth proportional to 671,546.80, 1,008,097.80 and 405,607.60 is: 608,881.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,546.80 : 1,008,097.80 = 405,607.60 : x
  2. Step 2: Convert to fraction form
    671,546.80/1,008,097.80 = 405,607.60/x
  3. Step 3: Cross multiply
    671,546.80x = 1,008,097.80 × 405,607.60
  4. Step 4: Simplify right side
    671,546.80x = 408,892,129,223.28
  5. Step 5: Solve for x
    x = 408,892,129,223.28/671,546.80
  6. Step 6: Final answer
    x = 608,881.06

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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.