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Finding the Fourth Proportional to 366,623.02, 505,409.60 and 257,394.82

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Solution

The fourth proportional to 366,623.02, 505,409.60 and 257,394.82 is: 354,832.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,623.02 : 505,409.60 = 257,394.82 : x
  2. Step 2: Convert to fraction form
    366,623.02/505,409.60 = 257,394.82/x
  3. Step 3: Cross multiply
    366,623.02x = 505,409.60 × 257,394.82
  4. Step 4: Simplify right side
    366,623.02x = 130,089,813,018.27
  5. Step 5: Solve for x
    x = 130,089,813,018.27/366,623.02
  6. Step 6: Final answer
    x = 354,832.64

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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.