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Finding the Fourth Proportional to 510,786.36, 766,856.70 and 436,384.62

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Solution

The fourth proportional to 510,786.36, 766,856.70 and 436,384.62 is: 655,155.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,786.36 : 766,856.70 = 436,384.62 : x
  2. Step 2: Convert to fraction form
    510,786.36/766,856.70 = 436,384.62/x
  3. Step 3: Cross multiply
    510,786.36x = 766,856.70 × 436,384.62
  4. Step 4: Simplify right side
    510,786.36x = 334,644,469,623.95
  5. Step 5: Solve for x
    x = 334,644,469,623.95/510,786.36
  6. Step 6: Final answer
    x = 655,155.45

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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.