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Finding the Fourth Proportional to 288,911.30, 433,194.15 and 148,943.30

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Solution

The fourth proportional to 288,911.30, 433,194.15 and 148,943.30 is: 223,325.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,911.30 : 433,194.15 = 148,943.30 : x
  2. Step 2: Convert to fraction form
    288,911.30/433,194.15 = 148,943.30/x
  3. Step 3: Cross multiply
    288,911.30x = 433,194.15 × 148,943.30
  4. Step 4: Simplify right side
    288,911.30x = 64,521,366,241.70
  5. Step 5: Solve for x
    x = 64,521,366,241.70/288,911.30
  6. Step 6: Final answer
    x = 223,325.87

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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.