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Finding the Fourth Proportional to 363,627.12, 545,667.84 and 139,006.56

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Solution

The fourth proportional to 363,627.12, 545,667.84 and 139,006.56 is: 208,596.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,627.12 : 545,667.84 = 139,006.56 : x
  2. Step 2: Convert to fraction form
    363,627.12/545,667.84 = 139,006.56/x
  3. Step 3: Cross multiply
    363,627.12x = 545,667.84 × 139,006.56
  4. Step 4: Simplify right side
    363,627.12x = 75,851,409,341.03
  5. Step 5: Solve for x
    x = 75,851,409,341.03/363,627.12
  6. Step 6: Final answer
    x = 208,596.68

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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.