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Finding the Fourth Proportional to 529,078.82, 730,134.09 and 287,366.13

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Solution

The fourth proportional to 529,078.82, 730,134.09 and 287,366.13 is: 396,568.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,078.82 : 730,134.09 = 287,366.13 : x
  2. Step 2: Convert to fraction form
    529,078.82/730,134.09 = 287,366.13/x
  3. Step 3: Cross multiply
    529,078.82x = 730,134.09 × 287,366.13
  4. Step 4: Simplify right side
    529,078.82x = 209,815,807,824.37
  5. Step 5: Solve for x
    x = 209,815,807,824.37/529,078.82
  6. Step 6: Final answer
    x = 396,568.15

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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.