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Finding the Fourth Proportional to 613,890.68, 920,748.54 and 193,155.62

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Solution

The fourth proportional to 613,890.68, 920,748.54 and 193,155.62 is: 289,705.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,890.68 : 920,748.54 = 193,155.62 : x
  2. Step 2: Convert to fraction form
    613,890.68/920,748.54 = 193,155.62/x
  3. Step 3: Cross multiply
    613,890.68x = 920,748.54 × 193,155.62
  4. Step 4: Simplify right side
    613,890.68x = 177,847,755,107.80
  5. Step 5: Solve for x
    x = 177,847,755,107.80/613,890.68
  6. Step 6: Final answer
    x = 289,705.91

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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.