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Finding the Fourth Proportional to 511,665.58, 767,500.17 and 156,678.04

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Solution

The fourth proportional to 511,665.58, 767,500.17 and 156,678.04 is: 235,017.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,665.58 : 767,500.17 = 156,678.04 : x
  2. Step 2: Convert to fraction form
    511,665.58/767,500.17 = 156,678.04/x
  3. Step 3: Cross multiply
    511,665.58x = 767,500.17 × 156,678.04
  4. Step 4: Simplify right side
    511,665.58x = 120,250,422,335.27
  5. Step 5: Solve for x
    x = 120,250,422,335.27/511,665.58
  6. Step 6: Final answer
    x = 235,017.61

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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.