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Finding the Fourth Proportional to 526,528.80, 789,793.20 and 260,808.30

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Solution

The fourth proportional to 526,528.80, 789,793.20 and 260,808.30 is: 391,212.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,528.80 : 789,793.20 = 260,808.30 : x
  2. Step 2: Convert to fraction form
    526,528.80/789,793.20 = 260,808.30/x
  3. Step 3: Cross multiply
    526,528.80x = 789,793.20 × 260,808.30
  4. Step 4: Simplify right side
    526,528.80x = 205,984,621,843.56
  5. Step 5: Solve for x
    x = 205,984,621,843.56/526,528.80
  6. Step 6: Final answer
    x = 391,212.45

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Double scale
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Similar ratio
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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.