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Finding the Fourth Proportional to 606,861.69, 836,995.76 and 389,091.18

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Solution

The fourth proportional to 606,861.69, 836,995.76 and 389,091.18 is: 536,642.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,861.69 : 836,995.76 = 389,091.18 : x
  2. Step 2: Convert to fraction form
    606,861.69/836,995.76 = 389,091.18/x
  3. Step 3: Cross multiply
    606,861.69x = 836,995.76 × 389,091.18
  4. Step 4: Simplify right side
    606,861.69x = 325,667,665,967.94
  5. Step 5: Solve for x
    x = 325,667,665,967.94/606,861.69
  6. Step 6: Final answer
    x = 536,642.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.