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Finding the Fourth Proportional to 577,986.80, 866,980.20 and 519,083.60

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Solution

The fourth proportional to 577,986.80, 866,980.20 and 519,083.60 is: 778,625.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,986.80 : 866,980.20 = 519,083.60 : x
  2. Step 2: Convert to fraction form
    577,986.80/866,980.20 = 519,083.60/x
  3. Step 3: Cross multiply
    577,986.80x = 866,980.20 × 519,083.60
  4. Step 4: Simplify right side
    577,986.80x = 450,035,203,344.72
  5. Step 5: Solve for x
    x = 450,035,203,344.72/577,986.80
  6. Step 6: Final answer
    x = 778,625.40

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1.5x scale

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.