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Finding the Fourth Proportional to 513,833.84, 771,032.85 and 261,136.13

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Solution

The fourth proportional to 513,833.84, 771,032.85 and 261,136.13 is: 391,847.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,833.84 : 771,032.85 = 261,136.13 : x
  2. Step 2: Convert to fraction form
    513,833.84/771,032.85 = 261,136.13/x
  3. Step 3: Cross multiply
    513,833.84x = 771,032.85 × 261,136.13
  4. Step 4: Simplify right side
    513,833.84x = 201,344,532,620.42
  5. Step 5: Solve for x
    x = 201,344,532,620.42/513,833.84
  6. Step 6: Final answer
    x = 391,847.55

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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.