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Finding the Fourth Proportional to 511,444.77, 767,139.32 and 156,458.78

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Solution

The fourth proportional to 511,444.77, 767,139.32 and 156,458.78 is: 234,679.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,444.77 : 767,139.32 = 156,458.78 : x
  2. Step 2: Convert to fraction form
    511,444.77/767,139.32 = 156,458.78/x
  3. Step 3: Cross multiply
    511,444.77x = 767,139.32 × 156,458.78
  4. Step 4: Simplify right side
    511,444.77x = 120,025,682,097.23
  5. Step 5: Solve for x
    x = 120,025,682,097.23/511,444.77
  6. Step 6: Final answer
    x = 234,679.65

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1.5x scale

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.