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Finding the Fourth Proportional to 421,293.43, 632,099.73 and 252,931.33

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Solution

The fourth proportional to 421,293.43, 632,099.73 and 252,931.33 is: 379,492.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,293.43 : 632,099.73 = 252,931.33 : x
  2. Step 2: Convert to fraction form
    421,293.43/632,099.73 = 252,931.33/x
  3. Step 3: Cross multiply
    421,293.43x = 632,099.73 × 252,931.33
  4. Step 4: Simplify right side
    421,293.43x = 159,877,826,783.83
  5. Step 5: Solve for x
    x = 159,877,826,783.83/421,293.43
  6. Step 6: Final answer
    x = 379,492.81

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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.