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Finding the Fourth Proportional to 529,694.88, 730,993.38 and 287,993.76

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Solution

The fourth proportional to 529,694.88, 730,993.38 and 287,993.76 is: 397,439.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,694.88 : 730,993.38 = 287,993.76 : x
  2. Step 2: Convert to fraction form
    529,694.88/730,993.38 = 287,993.76/x
  3. Step 3: Cross multiply
    529,694.88x = 730,993.38 × 287,993.76
  4. Step 4: Simplify right side
    529,694.88x = 210,521,532,041.31
  5. Step 5: Solve for x
    x = 210,521,532,041.31/529,694.88
  6. Step 6: Final answer
    x = 397,439.24

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1.5x scale

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.