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Finding the Fourth Proportional to 468,663.81, 646,755.07 and 253,803.21

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Solution

The fourth proportional to 468,663.81, 646,755.07 and 253,803.21 is: 350,247.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,663.81 : 646,755.07 = 253,803.21 : x
  2. Step 2: Convert to fraction form
    468,663.81/646,755.07 = 253,803.21/x
  3. Step 3: Cross multiply
    468,663.81x = 646,755.07 × 253,803.21
  4. Step 4: Simplify right side
    468,663.81x = 164,148,512,849.78
  5. Step 5: Solve for x
    x = 164,148,512,849.78/468,663.81
  6. Step 6: Final answer
    x = 350,247.89

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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.