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Finding the Fourth Proportional to 666,555.32, 999,936.66 and 217,171.56

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Solution

The fourth proportional to 666,555.32, 999,936.66 and 217,171.56 is: 325,791.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,555.32 : 999,936.66 = 217,171.56 : x
  2. Step 2: Convert to fraction form
    666,555.32/999,936.66 = 217,171.56/x
  3. Step 3: Cross multiply
    666,555.32x = 999,936.66 × 217,171.56
  4. Step 4: Simplify right side
    666,555.32x = 217,157,804,353.39
  5. Step 5: Solve for x
    x = 217,157,804,353.39/666,555.32
  6. Step 6: Final answer
    x = 325,791.12

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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.