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Finding the Fourth Proportional to 577,982.80, 866,974.20 and 519,079.60

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Solution

The fourth proportional to 577,982.80, 866,974.20 and 519,079.60 is: 778,619.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,982.80 : 866,974.20 = 519,079.60 : x
  2. Step 2: Convert to fraction form
    577,982.80/866,974.20 = 519,079.60/x
  3. Step 3: Cross multiply
    577,982.80x = 866,974.20 × 519,079.60
  4. Step 4: Simplify right side
    577,982.80x = 450,028,620,946.32
  5. Step 5: Solve for x
    x = 450,028,620,946.32/577,982.80
  6. Step 6: Final answer
    x = 778,619.40

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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.