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Finding the Fourth Proportional to 451,208.51, 622,950.87 and 290,343.12

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Solution

The fourth proportional to 451,208.51, 622,950.87 and 290,343.12 is: 400,855.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,208.51 : 622,950.87 = 290,343.12 : x
  2. Step 2: Convert to fraction form
    451,208.51/622,950.87 = 290,343.12/x
  3. Step 3: Cross multiply
    451,208.51x = 622,950.87 × 290,343.12
  4. Step 4: Simplify right side
    451,208.51x = 180,869,499,202.51
  5. Step 5: Solve for x
    x = 180,869,499,202.51/451,208.51
  6. Step 6: Final answer
    x = 400,855.70

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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.