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Finding the Fourth Proportional to 436,901.70, 655,352.55 and 394,911.30

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Solution

The fourth proportional to 436,901.70, 655,352.55 and 394,911.30 is: 592,366.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,901.70 : 655,352.55 = 394,911.30 : x
  2. Step 2: Convert to fraction form
    436,901.70/655,352.55 = 394,911.30/x
  3. Step 3: Cross multiply
    436,901.70x = 655,352.55 × 394,911.30
  4. Step 4: Simplify right side
    436,901.70x = 258,806,127,478.82
  5. Step 5: Solve for x
    x = 258,806,127,478.82/436,901.70
  6. Step 6: Final answer
    x = 592,366.95

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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.