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Finding the Fourth Proportional to 529,057.63, 730,104.80 and 287,344.92

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Solution

The fourth proportional to 529,057.63, 730,104.80 and 287,344.92 is: 396,538.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,057.63 : 730,104.80 = 287,344.92 : x
  2. Step 2: Convert to fraction form
    529,057.63/730,104.80 = 287,344.92/x
  3. Step 3: Cross multiply
    529,057.63x = 730,104.80 × 287,344.92
  4. Step 4: Simplify right side
    529,057.63x = 209,791,903,910.89
  5. Step 5: Solve for x
    x = 209,791,903,910.89/529,057.63
  6. Step 6: Final answer
    x = 396,538.85

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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.