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Finding the Fourth Proportional to 619,231.80, 928,847.70 and 367,289.40

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Solution

The fourth proportional to 619,231.80, 928,847.70 and 367,289.40 is: 550,934.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,231.80 : 928,847.70 = 367,289.40 : x
  2. Step 2: Convert to fraction form
    619,231.80/928,847.70 = 367,289.40/x
  3. Step 3: Cross multiply
    619,231.80x = 928,847.70 × 367,289.40
  4. Step 4: Simplify right side
    619,231.80x = 341,155,914,424.38
  5. Step 5: Solve for x
    x = 341,155,914,424.38/619,231.80
  6. Step 6: Final answer
    x = 550,934.10

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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.