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Finding the Fourth Proportional to 511,676.02, 767,515.89 and 156,688.60

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Solution

The fourth proportional to 511,676.02, 767,515.89 and 156,688.60 is: 235,033.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,676.02 : 767,515.89 = 156,688.60 : x
  2. Step 2: Convert to fraction form
    511,676.02/767,515.89 = 156,688.60/x
  3. Step 3: Cross multiply
    511,676.02x = 767,515.89 × 156,688.60
  4. Step 4: Simplify right side
    511,676.02x = 120,260,990,281.85
  5. Step 5: Solve for x
    x = 120,260,990,281.85/511,676.02
  6. Step 6: Final answer
    x = 235,033.47

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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.