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Finding the Fourth Proportional to 619,121.94, 928,683.11 and 408,710.67

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Solution

The fourth proportional to 619,121.94, 928,683.11 and 408,710.67 is: 613,066.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,121.94 : 928,683.11 = 408,710.67 : x
  2. Step 2: Convert to fraction form
    619,121.94/928,683.11 = 408,710.67/x
  3. Step 3: Cross multiply
    619,121.94x = 928,683.11 × 408,710.67
  4. Step 4: Simplify right side
    619,121.94x = 379,562,696,105.78
  5. Step 5: Solve for x
    x = 379,562,696,105.78/619,121.94
  6. Step 6: Final answer
    x = 613,066.14

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Double scale
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Similar ratio
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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.