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Finding the Fourth Proportional to 406,954.60, 610,431.90 and 389,677.30

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Solution

The fourth proportional to 406,954.60, 610,431.90 and 389,677.30 is: 584,515.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,954.60 : 610,431.90 = 389,677.30 : x
  2. Step 2: Convert to fraction form
    406,954.60/610,431.90 = 389,677.30/x
  3. Step 3: Cross multiply
    406,954.60x = 610,431.90 × 389,677.30
  4. Step 4: Simplify right side
    406,954.60x = 237,871,454,625.87
  5. Step 5: Solve for x
    x = 237,871,454,625.87/406,954.60
  6. Step 6: Final answer
    x = 584,515.95

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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.