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Finding the Fourth Proportional to 573,137.20, 857,664.60 and 499,070.80

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Solution

The fourth proportional to 573,137.20, 857,664.60 and 499,070.80 is: 746,828.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,137.20 : 857,664.60 = 499,070.80 : x
  2. Step 2: Convert to fraction form
    573,137.20/857,664.60 = 499,070.80/x
  3. Step 3: Cross multiply
    573,137.20x = 857,664.60 × 499,070.80
  4. Step 4: Simplify right side
    573,137.20x = 428,035,358,053.68
  5. Step 5: Solve for x
    x = 428,035,358,053.68/573,137.20
  6. Step 6: Final answer
    x = 746,828.78

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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.