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Finding the Fourth Proportional to 529,765.75, 731,076.74 and 291,301.75

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Solution

The fourth proportional to 529,765.75, 731,076.74 and 291,301.75 is: 401,996.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,765.75 : 731,076.74 = 291,301.75 : x
  2. Step 2: Convert to fraction form
    529,765.75/731,076.74 = 291,301.75/x
  3. Step 3: Cross multiply
    529,765.75x = 731,076.74 × 291,301.75
  4. Step 4: Simplify right side
    529,765.75x = 212,963,933,746.30
  5. Step 5: Solve for x
    x = 212,963,933,746.30/529,765.75
  6. Step 6: Final answer
    x = 401,996.42

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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.