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Finding the Fourth Proportional to 298,402.55, 447,440.21 and 118,305.53

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Solution

The fourth proportional to 298,402.55, 447,440.21 and 118,305.53 is: 177,393.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,402.55 : 447,440.21 = 118,305.53 : x
  2. Step 2: Convert to fraction form
    298,402.55/447,440.21 = 118,305.53/x
  3. Step 3: Cross multiply
    298,402.55x = 447,440.21 × 118,305.53
  4. Step 4: Simplify right side
    298,402.55x = 52,934,648,358.63
  5. Step 5: Solve for x
    x = 52,934,648,358.63/298,402.55
  6. Step 6: Final answer
    x = 177,393.42

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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.