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Finding the Fourth Proportional to 351,777.40, 528,054.90 and 218,807.80

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Solution

The fourth proportional to 351,777.40, 528,054.90 and 218,807.80 is: 328,453.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,777.40 : 528,054.90 = 218,807.80 : x
  2. Step 2: Convert to fraction form
    351,777.40/528,054.90 = 218,807.80/x
  3. Step 3: Cross multiply
    351,777.40x = 528,054.90 × 218,807.80
  4. Step 4: Simplify right side
    351,777.40x = 115,542,530,948.22
  5. Step 5: Solve for x
    x = 115,542,530,948.22/351,777.40
  6. Step 6: Final answer
    x = 328,453.54

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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.