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Finding the Fourth Proportional to 624,186.70, 861,377.32 and 352,311.64

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Solution

The fourth proportional to 624,186.70, 861,377.32 and 352,311.64 is: 486,189.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,186.70 : 861,377.32 = 352,311.64 : x
  2. Step 2: Convert to fraction form
    624,186.70/861,377.32 = 352,311.64/x
  3. Step 3: Cross multiply
    624,186.70x = 861,377.32 × 352,311.64
  4. Step 4: Simplify right side
    624,186.70x = 303,473,256,268.01
  5. Step 5: Solve for x
    x = 303,473,256,268.01/624,186.70
  6. Step 6: Final answer
    x = 486,189.88

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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.