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Finding the Fourth Proportional to 577,651.80, 866,477.70 and 409,690.20

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Solution

The fourth proportional to 577,651.80, 866,477.70 and 409,690.20 is: 614,535.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,651.80 : 866,477.70 = 409,690.20 : x
  2. Step 2: Convert to fraction form
    577,651.80/866,477.70 = 409,690.20/x
  3. Step 3: Cross multiply
    577,651.80x = 866,477.70 × 409,690.20
  4. Step 4: Simplify right side
    577,651.80x = 354,987,422,208.54
  5. Step 5: Solve for x
    x = 354,987,422,208.54/577,651.80
  6. Step 6: Final answer
    x = 614,535.30

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Similar ratio
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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.