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Finding the Fourth Proportional to 673,138.50, 928,948.68 and 367,219.86

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Solution

The fourth proportional to 673,138.50, 928,948.68 and 367,219.86 is: 506,772.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,138.50 : 928,948.68 = 367,219.86 : x
  2. Step 2: Convert to fraction form
    673,138.50/928,948.68 = 367,219.86/x
  3. Step 3: Cross multiply
    673,138.50x = 928,948.68 × 367,219.86
  4. Step 4: Simplify right side
    673,138.50x = 341,128,404,216.79
  5. Step 5: Solve for x
    x = 341,128,404,216.79/673,138.50
  6. Step 6: Final answer
    x = 506,772.98

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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.