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Finding the Fourth Proportional to 495,426.60, 743,139.90 and 295,972.20

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Solution

The fourth proportional to 495,426.60, 743,139.90 and 295,972.20 is: 443,958.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,426.60 : 743,139.90 = 295,972.20 : x
  2. Step 2: Convert to fraction form
    495,426.60/743,139.90 = 295,972.20/x
  3. Step 3: Cross multiply
    495,426.60x = 743,139.90 × 295,972.20
  4. Step 4: Simplify right side
    495,426.60x = 219,948,751,110.78
  5. Step 5: Solve for x
    x = 219,948,751,110.78/495,426.60
  6. Step 6: Final answer
    x = 443,958.30

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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.