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Finding the Fourth Proportional to 554,021.44, 764,905.42 and 347,572.86

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Solution

The fourth proportional to 554,021.44, 764,905.42 and 347,572.86 is: 479,873.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,021.44 : 764,905.42 = 347,572.86 : x
  2. Step 2: Convert to fraction form
    554,021.44/764,905.42 = 347,572.86/x
  3. Step 3: Cross multiply
    554,021.44x = 764,905.42 × 347,572.86
  4. Step 4: Simplify right side
    554,021.44x = 265,860,364,458.90
  5. Step 5: Solve for x
    x = 265,860,364,458.90/554,021.44
  6. Step 6: Final answer
    x = 479,873.78

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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.