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Finding the Fourth Proportional to 544,009.40, 816,014.10 and 419,593.40

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Solution

The fourth proportional to 544,009.40, 816,014.10 and 419,593.40 is: 629,390.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,009.40 : 816,014.10 = 419,593.40 : x
  2. Step 2: Convert to fraction form
    544,009.40/816,014.10 = 419,593.40/x
  3. Step 3: Cross multiply
    544,009.40x = 816,014.10 × 419,593.40
  4. Step 4: Simplify right side
    544,009.40x = 342,394,130,666.94
  5. Step 5: Solve for x
    x = 342,394,130,666.94/544,009.40
  6. Step 6: Final answer
    x = 629,390.10

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Double scale
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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.