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Finding the Fourth Proportional to 613,635.05, 920,505.76 and 187,266.86

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Solution

The fourth proportional to 613,635.05, 920,505.76 and 187,266.86 is: 280,916.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,635.05 : 920,505.76 = 187,266.86 : x
  2. Step 2: Convert to fraction form
    613,635.05/920,505.76 = 187,266.86/x
  3. Step 3: Cross multiply
    613,635.05x = 920,505.76 × 187,266.86
  4. Step 4: Simplify right side
    613,635.05x = 172,380,223,287.11
  5. Step 5: Solve for x
    x = 172,380,223,287.11/613,635.05
  6. Step 6: Final answer
    x = 280,916.52

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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.