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Finding the Fourth Proportional to 721,216.58, 994,966.13 and 434,573.78

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Solution

The fourth proportional to 721,216.58, 994,966.13 and 434,573.78 is: 599,523.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,216.58 : 994,966.13 = 434,573.78 : x
  2. Step 2: Convert to fraction form
    721,216.58/994,966.13 = 434,573.78/x
  3. Step 3: Cross multiply
    721,216.58x = 994,966.13 × 434,573.78
  4. Step 4: Simplify right side
    721,216.58x = 432,386,188,197.68
  5. Step 5: Solve for x
    x = 432,386,188,197.68/721,216.58
  6. Step 6: Final answer
    x = 599,523.37

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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.