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Finding the Fourth Proportional to 511,644.20, 767,523.90 and 156,655.40

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Solution

The fourth proportional to 511,644.20, 767,523.90 and 156,655.40 is: 235,000.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,644.20 : 767,523.90 = 156,655.40 : x
  2. Step 2: Convert to fraction form
    511,644.20/767,523.90 = 156,655.40/x
  3. Step 3: Cross multiply
    511,644.20x = 767,523.90 × 156,655.40
  4. Step 4: Simplify right side
    511,644.20x = 120,236,763,564.06
  5. Step 5: Solve for x
    x = 120,236,763,564.06/511,644.20
  6. Step 6: Final answer
    x = 235,000.74

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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.