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Finding the Fourth Proportional to 526,364.20, 789,539 and 127,001.64

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Solution

The fourth proportional to 526,364.20, 789,539 and 127,001.64 is: 190,500.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,364.20 : 789,539 = 127,001.64 : x
  2. Step 2: Convert to fraction form
    526,364.20/789,539 = 127,001.64/x
  3. Step 3: Cross multiply
    526,364.20x = 789,539 × 127,001.64
  4. Step 4: Simplify right side
    526,364.20x = 100,272,747,843.96
  5. Step 5: Solve for x
    x = 100,272,747,843.96/526,364.20
  6. Step 6: Final answer
    x = 190,500.70

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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.