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Finding the Fourth Proportional to 383,634.95, 529,404.09 and 211,560.17

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Solution

The fourth proportional to 383,634.95, 529,404.09 and 211,560.17 is: 291,946.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,634.95 : 529,404.09 = 211,560.17 : x
  2. Step 2: Convert to fraction form
    383,634.95/529,404.09 = 211,560.17/x
  3. Step 3: Cross multiply
    383,634.95x = 529,404.09 × 211,560.17
  4. Step 4: Simplify right side
    383,634.95x = 112,000,816,632.08
  5. Step 5: Solve for x
    x = 112,000,816,632.08/383,634.95
  6. Step 6: Final answer
    x = 291,946.34

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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.