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Finding the Fourth Proportional to 529,618.56, 730,868.41 and 287,886.75

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Solution

The fourth proportional to 529,618.56, 730,868.41 and 287,886.75 is: 397,280.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,618.56 : 730,868.41 = 287,886.75 : x
  2. Step 2: Convert to fraction form
    529,618.56/730,868.41 = 287,886.75/x
  3. Step 3: Cross multiply
    529,618.56x = 730,868.41 × 287,886.75
  4. Step 4: Simplify right side
    529,618.56x = 210,407,327,578.23
  5. Step 5: Solve for x
    x = 210,407,327,578.23/529,618.56
  6. Step 6: Final answer
    x = 397,280.88

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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.