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Finding the Fourth Proportional to 511,840.85, 767,873.60 and 156,881.57

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Solution

The fourth proportional to 511,840.85, 767,873.60 and 156,881.57 is: 235,356.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,840.85 : 767,873.60 = 156,881.57 : x
  2. Step 2: Convert to fraction form
    511,840.85/767,873.60 = 156,881.57/x
  3. Step 3: Cross multiply
    511,840.85x = 767,873.60 × 156,881.57
  4. Step 4: Simplify right side
    511,840.85x = 120,465,215,145.14
  5. Step 5: Solve for x
    x = 120,465,215,145.14/511,840.85
  6. Step 6: Final answer
    x = 235,356.78

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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.