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Finding the Fourth Proportional to 553,560.60, 830,340.90 and 419,716.20

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Solution

The fourth proportional to 553,560.60, 830,340.90 and 419,716.20 is: 629,574.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,560.60 : 830,340.90 = 419,716.20 : x
  2. Step 2: Convert to fraction form
    553,560.60/830,340.90 = 419,716.20/x
  3. Step 3: Cross multiply
    553,560.60x = 830,340.90 × 419,716.20
  4. Step 4: Simplify right side
    553,560.60x = 348,507,527,252.58
  5. Step 5: Solve for x
    x = 348,507,527,252.58/553,560.60
  6. Step 6: Final answer
    x = 629,574.30

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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.