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Finding the Fourth Proportional to 504,912.96, 696,783.60 and 278,566.56

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Solution

The fourth proportional to 504,912.96, 696,783.60 and 278,566.56 is: 384,423.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,912.96 : 696,783.60 = 278,566.56 : x
  2. Step 2: Convert to fraction form
    504,912.96/696,783.60 = 278,566.56/x
  3. Step 3: Cross multiply
    504,912.96x = 696,783.60 × 278,566.56
  4. Step 4: Simplify right side
    504,912.96x = 194,100,610,516.42
  5. Step 5: Solve for x
    x = 194,100,610,516.42/504,912.96
  6. Step 6: Final answer
    x = 384,423.90

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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.