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Finding the Fourth Proportional to 529,191.81, 730,257.07 and 287,473.63

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Solution

The fourth proportional to 529,191.81, 730,257.07 and 287,473.63 is: 396,698.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,191.81 : 730,257.07 = 287,473.63 : x
  2. Step 2: Convert to fraction form
    529,191.81/730,257.07 = 287,473.63/x
  3. Step 3: Cross multiply
    529,191.81x = 730,257.07 × 287,473.63
  4. Step 4: Simplify right side
    529,191.81x = 209,929,652,163.83
  5. Step 5: Solve for x
    x = 209,929,652,163.83/529,191.81
  6. Step 6: Final answer
    x = 396,698.61

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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.