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Finding the Fourth Proportional to 582,568.60, 872,103.30 and 345,789.40

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Solution

The fourth proportional to 582,568.60, 872,103.30 and 345,789.40 is: 517,645.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,568.60 : 872,103.30 = 345,789.40 : x
  2. Step 2: Convert to fraction form
    582,568.60/872,103.30 = 345,789.40/x
  3. Step 3: Cross multiply
    582,568.60x = 872,103.30 × 345,789.40
  4. Step 4: Simplify right side
    582,568.60x = 301,564,076,845.02
  5. Step 5: Solve for x
    x = 301,564,076,845.02/582,568.60
  6. Step 6: Final answer
    x = 517,645.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.