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Finding the Fourth Proportional to 526,537.80, 789,806.70 and 260,817.30

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Solution

The fourth proportional to 526,537.80, 789,806.70 and 260,817.30 is: 391,225.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,537.80 : 789,806.70 = 260,817.30 : x
  2. Step 2: Convert to fraction form
    526,537.80/789,806.70 = 260,817.30/x
  3. Step 3: Cross multiply
    526,537.80x = 789,806.70 × 260,817.30
  4. Step 4: Simplify right side
    526,537.80x = 205,995,251,015.91
  5. Step 5: Solve for x
    x = 205,995,251,015.91/526,537.80
  6. Step 6: Final answer
    x = 391,225.95

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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.