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Finding the Fourth Proportional to 399,088.73, 550,755.32 and 227,002.25

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Solution

The fourth proportional to 399,088.73, 550,755.32 and 227,002.25 is: 313,270.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,088.73 : 550,755.32 = 227,002.25 : x
  2. Step 2: Convert to fraction form
    399,088.73/550,755.32 = 227,002.25/x
  3. Step 3: Cross multiply
    399,088.73x = 550,755.32 × 227,002.25
  4. Step 4: Simplify right side
    399,088.73x = 125,022,697,081.35
  5. Step 5: Solve for x
    x = 125,022,697,081.35/399,088.73
  6. Step 6: Final answer
    x = 313,270.43

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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.