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Finding the Fourth Proportional to 511,785.02, 768,342.74 and 393,539.37

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Solution

The fourth proportional to 511,785.02, 768,342.74 and 393,539.37 is: 590,820.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,785.02 : 768,342.74 = 393,539.37 : x
  2. Step 2: Convert to fraction form
    511,785.02/768,342.74 = 393,539.37/x
  3. Step 3: Cross multiply
    511,785.02x = 768,342.74 × 393,539.37
  4. Step 4: Simplify right side
    511,785.02x = 302,373,115,875.98
  5. Step 5: Solve for x
    x = 302,373,115,875.98/511,785.02
  6. Step 6: Final answer
    x = 590,820.57

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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.