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Finding the Fourth Proportional to 611,190.36, 843,400.48 and 339,236.86

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Solution

The fourth proportional to 611,190.36, 843,400.48 and 339,236.86 is: 468,123.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,190.36 : 843,400.48 = 339,236.86 : x
  2. Step 2: Convert to fraction form
    611,190.36/843,400.48 = 339,236.86/x
  3. Step 3: Cross multiply
    611,190.36x = 843,400.48 × 339,236.86
  4. Step 4: Simplify right side
    611,190.36x = 286,112,528,864.44
  5. Step 5: Solve for x
    x = 286,112,528,864.44/611,190.36
  6. Step 6: Final answer
    x = 468,123.43

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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.