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Finding the Fourth Proportional to 590,386.88, 814,997.76 and 399,978.56

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Solution

The fourth proportional to 590,386.88, 814,997.76 and 399,978.56 is: 552,149.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,386.88 : 814,997.76 = 399,978.56 : x
  2. Step 2: Convert to fraction form
    590,386.88/814,997.76 = 399,978.56/x
  3. Step 3: Cross multiply
    590,386.88x = 814,997.76 × 399,978.56
  4. Step 4: Simplify right side
    590,386.88x = 325,981,630,448.03
  5. Step 5: Solve for x
    x = 325,981,630,448.03/590,386.88
  6. Step 6: Final answer
    x = 552,149.18

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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.