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Finding the Fourth Proportional to 469,904.42, 648,450.75 and 255,039.87

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Solution

The fourth proportional to 469,904.42, 648,450.75 and 255,039.87 is: 351,945.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,904.42 : 648,450.75 = 255,039.87 : x
  2. Step 2: Convert to fraction form
    469,904.42/648,450.75 = 255,039.87/x
  3. Step 3: Cross multiply
    469,904.42x = 648,450.75 × 255,039.87
  4. Step 4: Simplify right side
    469,904.42x = 165,380,794,981.40
  5. Step 5: Solve for x
    x = 165,380,794,981.40/469,904.42
  6. Step 6: Final answer
    x = 351,945.60

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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.