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Finding the Fourth Proportional to 372,448.17, 513,990.14 and 211,310.01

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Solution

The fourth proportional to 372,448.17, 513,990.14 and 211,310.01 is: 291,614.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,448.17 : 513,990.14 = 211,310.01 : x
  2. Step 2: Convert to fraction form
    372,448.17/513,990.14 = 211,310.01/x
  3. Step 3: Cross multiply
    372,448.17x = 513,990.14 × 211,310.01
  4. Step 4: Simplify right side
    372,448.17x = 108,611,260,566.75
  5. Step 5: Solve for x
    x = 108,611,260,566.75/372,448.17
  6. Step 6: Final answer
    x = 291,614.43

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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.