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Finding the Fourth Proportional to 590,688.72, 815,151.60 and 322,416.72

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Solution

The fourth proportional to 590,688.72, 815,151.60 and 322,416.72 is: 444,935.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,688.72 : 815,151.60 = 322,416.72 : x
  2. Step 2: Convert to fraction form
    590,688.72/815,151.60 = 322,416.72/x
  3. Step 3: Cross multiply
    590,688.72x = 815,151.60 × 322,416.72
  4. Step 4: Simplify right side
    590,688.72x = 262,818,505,174.75
  5. Step 5: Solve for x
    x = 262,818,505,174.75/590,688.72
  6. Step 6: Final answer
    x = 444,935.71

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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.