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Finding the Fourth Proportional to 468,655.78, 646,743.68 and 253,795.79

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Solution

The fourth proportional to 468,655.78, 646,743.68 and 253,795.79 is: 350,237.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,655.78 : 646,743.68 = 253,795.79 : x
  2. Step 2: Convert to fraction form
    468,655.78/646,743.68 = 253,795.79/x
  3. Step 3: Cross multiply
    468,655.78x = 646,743.68 × 253,795.79
  4. Step 4: Simplify right side
    468,655.78x = 164,140,823,193.11
  5. Step 5: Solve for x
    x = 164,140,823,193.11/468,655.78
  6. Step 6: Final answer
    x = 350,237.49

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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.