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Finding the Fourth Proportional to 611,046.86, 843,055.70 and 356,217.62

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Solution

The fourth proportional to 611,046.86, 843,055.70 and 356,217.62 is: 491,470.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,046.86 : 843,055.70 = 356,217.62 : x
  2. Step 2: Convert to fraction form
    611,046.86/843,055.70 = 356,217.62/x
  3. Step 3: Cross multiply
    611,046.86x = 843,055.70 × 356,217.62
  4. Step 4: Simplify right side
    611,046.86x = 300,311,294,981.43
  5. Step 5: Solve for x
    x = 300,311,294,981.43/611,046.86
  6. Step 6: Final answer
    x = 491,470.15

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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.