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Finding the Fourth Proportional to 587,519, 810,781.08 and 319,247

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Solution

The fourth proportional to 587,519, 810,781.08 and 319,247 is: 440,563.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,519 : 810,781.08 = 319,247 : x
  2. Step 2: Convert to fraction form
    587,519/810,781.08 = 319,247/x
  3. Step 3: Cross multiply
    587,519x = 810,781.08 × 319,247
  4. Step 4: Simplify right side
    587,519x = 258,839,427,446.76
  5. Step 5: Solve for x
    x = 258,839,427,446.76/587,519
  6. Step 6: Final answer
    x = 440,563.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.