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Finding the Fourth Proportional to 613,401.10, 920,101.65 and 192,676.30

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Solution

The fourth proportional to 613,401.10, 920,101.65 and 192,676.30 is: 289,014.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,401.10 : 920,101.65 = 192,676.30 : x
  2. Step 2: Convert to fraction form
    613,401.10/920,101.65 = 192,676.30/x
  3. Step 3: Cross multiply
    613,401.10x = 920,101.65 × 192,676.30
  4. Step 4: Simplify right side
    613,401.10x = 177,281,781,545.90
  5. Step 5: Solve for x
    x = 177,281,781,545.90/613,401.10
  6. Step 6: Final answer
    x = 289,014.45

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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.