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Finding the Fourth Proportional to 577,963.80, 866,945.70 and 519,060.60

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Solution

The fourth proportional to 577,963.80, 866,945.70 and 519,060.60 is: 778,590.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,963.80 : 866,945.70 = 519,060.60 : x
  2. Step 2: Convert to fraction form
    577,963.80/866,945.70 = 519,060.60/x
  3. Step 3: Cross multiply
    577,963.80x = 866,945.70 × 519,060.60
  4. Step 4: Simplify right side
    577,963.80x = 449,997,355,209.42
  5. Step 5: Solve for x
    x = 449,997,355,209.42/577,963.80
  6. Step 6: Final answer
    x = 778,590.90

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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.