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Finding the Fourth Proportional to 529,100.19, 730,163.61 and 287,387.48

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Solution

The fourth proportional to 529,100.19, 730,163.61 and 287,387.48 is: 396,597.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,100.19 : 730,163.61 = 287,387.48 : x
  2. Step 2: Convert to fraction form
    529,100.19/730,163.61 = 287,387.48/x
  3. Step 3: Cross multiply
    529,100.19x = 730,163.61 × 287,387.48
  4. Step 4: Simplify right side
    529,100.19x = 209,839,876,214.79
  5. Step 5: Solve for x
    x = 209,839,876,214.79/529,100.19
  6. Step 6: Final answer
    x = 396,597.62

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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.